Help please with Calculator

Question

Hello my friends.
I am newbie and i want to get knowledge very much.
I can't find information about simple calculator in russian language.
Maybe somebody saw this information.
I need your help so much.
Thanks for your attention

Answer 1

Execute this and input the expression to be calculated:
print(eval(input()))

Answer 2

Hello, is very easy check my code.
Instrucciones for use:
Enter first value example 5
Enter Second value example 4
Enter Options
1 = Adition
2 = Sustraction
3 = Multiplication
4 = Division
https://code.sololearn.com/ct1Zv54p8kHd/?ref=año
If you need calculate for example 25 % the formula is:
value * 0.25
Sorry for my English is my Second lenguaje.

Answer 3

Yes, it very easy, but i wanted to understand how to write code of calculator where will be more information about ever act(+,-,*,%, etc)
But thanks so much too))))))