convert bullet numbers to a integer in excel -

i required convert bullet number in 1 column of excel integer:

here example i'm trying show:

3       =  3000000 3.1     =  3010000 3.1.1   =  3010100 3.1.1.1 =  3010101 10.1    = 10010000 

i'm having issues because bullets not have same number of characters.

substitute commands replace or none. there in-line way convert bullets numbers this?

thanks.

not ideal answer - i'm sure there's better ways, using dev1998 explanation work:

=substitute(a1,".","0") & rept("0",choose(len(a1)-len(substitute(a1,".",""))+1,6,4,2,0))

broken down separate functions:
replace decimal point 0:

in c1: =substitute(a1,".","0")

how many trailing zeros:

in d1 =choose(len(a1)-len(substitute(a1,".",""))+1,6,4,2,0)

trailing zeros:

in e1: =rept("0",d1)

stick together:

in f1: = c1 & e1