The following problems were fixed:
1) guess is now the same type as answer int().
2) error handling of a wrong input. The program accepts only integers.
3) optimization of the function random_problem()
4) division ( num_1 / num_2 ) returns int() now not flow()

A new branch is placed here https://github.com/iso25010/Create-Math-Game-Using-Pytho_bugFix_24.8.22.git. I didn't want to create a new branch here. Please feel free to merge it ;-)

Regards
-Z-