Calculator

This is a simple calculator that can perform basic arithmetic operations.

Create a calculator .NET console application with the following requirements:

1. The calculator should be able to perform the following operations: addition, subtraction, multiplication.
2. Create an abstract class called CalculatorBase, which contain Add, Subtract, Multiply functions. All 3 function takes exactly 2 integer arguments as input.
3. Inherit the Astract base class with a class called Calculator, which overrides the Add, Subtract, Multiply functions.
4. Call each of the calculator functions from Program.cs file