I need to work with numbers which are digits long.
Why? Because this is the way to create a German IBAN code from Bank Code and Bank account:
Concatenate Bank Code (8 digits) plus Account nbr (10 digits, leading zeroes) plus "131400" to a 24 digit number.
Compute Modulo 97 of this number. (or divide it by 97 into a integer, multiply by 97, and get the difference).
Does anyone know any programming language or other way to do this on a IBMi?