[BUG] Sign on display doesn't change after division by zero or mod 0

[Kaivanov21]

Steps to Replicate: after division by zero the error message is displayed as expected, but after that if we want to change sign it's not displayed that it's changed, but the final result is correct. The same issue with mod 0.

Expected behavior: the sign after division by zero should change on display as usual or not to allow to change sign in this case if last number in expression is not deleted.