A terminal based mental math trainer.
There are four elementary arithmetic operations you can train with Mental Math Calculations: addition, subtraction, multiplication and division (for now it's just integer division).
The code block below is an example of how you can basically use the applicaton in your terminal:
$ python3 main.py
Welcome to Mental Math Calculations!
How many problems do you want to solve?: {USER_INPUT} -> 3
94 * 46
Answer: {USER_INPUT} -> 4324
Solved successfully!
53 - 60
Answer: {USER_INPUT} -> -7
Solved successfully!
68 + 63
Answer: {USER_INPUT} -> 137
Wrong answer.
Solved correctly 2 out of 3 (66.7%) in 90.0s.