I need to make a checksum procedure. Can someone help me?
I have a 15 digit number:
The last 2 digits are zeroes by default.
To get a "control number" I have to perform the following calculation:
I divide Num with 97, thats:
Now I have to use the second digit of this result - the 9.
So 89 is my "control number",
and now at the end, Num: the last 2 zeroes get replaced with the "control number" and Num2: would be