I'm having problems trying to extract digits from numbers.

My dataset has a variable called "municipio", which contains nive digits (see data sample below)

I need to extract the last seven digits in order to obtain Brazilian municipalities' IDs.

Example:

For the municipality of "Franca", "municipio" value is 153516200

What I need: to remove 15 and obtain 3516200. And so on for all municipalities

How can that be done?

Thank you


Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input int idnum byte pais int estratopri float(ibge_uf_code ibge_mun_code) str2 braprov int prov str23 bramunicipio long municipio
  1 15 1504 35 . "SP" 1535 "Franca"              153516200
  2 15 1504 35 . "SP" 1535 "Franca"              153516200
  3 15 1504 35 . "SP" 1535 "Franca"              153516200
  4 15 1504 35 . "SP" 1535 "Franca"              153516200
  5 15 1504 35 . "SP" 1535 "Franca"              153516200
  6 15 1504 35 . "SP" 1535 "Franca"              153516200
  7 15 1504 35 . "SP" 1535 "Franca"              153516200
  8 15 1504 35 . "SP" 1535 "Franca"              153516200
  9 15 1504 35 . "SP" 1535 "Franca"              153516200
 10 15 1504 35 . "SP" 1535 "Franca"              153516200
 11 15 1504 35 . "SP" 1535 "Franca"              153516200
 12 15 1504 35 . "SP" 1535 "Franca"              153516200
 13 15 1504 35 . "SP" 1535 "Franca"              153516200
 14 15 1504 35 . "SP" 1535 "Franca"              153516200
 15 15 1504 35 . "SP" 1535 "Franca"              153516200
 16 15 1504 35 . "SP" 1535 "Franca"              153516200
 17 15 1504 35 . "SP" 1535 "Franca"              153516200
 18 15 1504 35 . "SP" 1535 "Franca"              153516200
 19 15 1504 35 . "SP" 1535 "Franca"              153516200
 20 15 1504 35 . "SP" 1535 "Franca"              153516200
 21 15 1504 35 . "SP" 1535 "Franca"              153516200
 22 15 1504 35 . "SP" 1535 "Franca"              153516200
 23 15 1504 35 . "SP" 1535 "Franca"              153516200
 24 15 1504 35 . "SP" 1535 "Franca"              153516200
 25 15 1504 35 . "SP" 1535 "Franca"              153516200
 26 15 1504 35 . "SP" 1535 "Franca"              153516200
 27 15 1504 35 . "SP" 1535 "Franca"              153516200
 28 15 1504 35 . "SP" 1535 "Franca"              153516200
 29 15 1504 35 . "SP" 1535 "Franca"              153516200
 30 15 1504 35 . "SP" 1535 "Franca"              153516200
 31 15 1504 35 . "SP" 1535 "Franca"              153516200
 32 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 33 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 34 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 35 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 36 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 37 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 38 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 39 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 40 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 41 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 42 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 43 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 44 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 45 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 46 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 47 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 48 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 49 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 50 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 51 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 52 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 53 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 54 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 55 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 56 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 57 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 58 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 59 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 60 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 61 15 1504 35 . "SP" 1535 "S�o Jose dos Campos" 153549904
 62 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 63 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 64 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 65 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 66 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 67 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 68 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 69 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 70 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 71 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 72 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 73 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 74 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 75 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 76 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 77 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 78 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 79 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 80 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 81 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 82 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 83 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 84 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 85 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 86 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 87 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 88 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 89 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 90 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 91 15 1504 35 . "SP" 1535 "Narandiba"           153532207
 92 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 93 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 94 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 95 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 96 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 97 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 98 15 1505 42 . "SC" 1542 "Blumenau"            154202404
 99 15 1505 42 . "SC" 1542 "Blumenau"            154202404
100 15 1505 42 . "SC" 1542 "Blumenau"            154202404
end
label values estratopri estratopri
label def estratopri 1504 "Sudeste", modify
label def estratopri 1505 "Sul", modify
label values prov prov
label def prov 1535 "S�o Paulo", modify
label def prov 1542 "Santa Catarina", modify
label values municipio municipio
label def municipio 153516200 "Franca", modify
label def municipio 153532207 "Narandiba", modify
label def municipio 153549904 "S�o Jos� dos Campos", modify
label def municipio 154202404 "Blumenau", modify