What am i doing wrong - math tool box

[nilamo]

What would you like to do?1
'1'

Boom, there's your answer. See the quotes? ans is a string. You're comparing it against ints, which will never be true. So, either...

a) change your if statements to compare against a string: if ans == "1":, or
b) force ans to be an int: ans = int(ans).