Methods/Calculations

using System;

namespace mhetodsnew
{
    class Program
    {
        static void Main(string[] args)
        {
            string command = Console.ReadLine();
            int numberFirst = int.Parse(Console.ReadLine());
            int numberSecond = int.Parse(Console.ReadLine());

            switch(command)
            {
                case "add":
                    Add(numberFirst, numberSecond);
                    break;
                case "subtract":
                    Subtract(numberFirst, numberSecond);
                    break;
                case "multiply":
                    Multiply(numberFirst, numberSecond);
                    break;
                case "divide":
                    Divide(numberFirst, numberSecond);
                    break;
            }


        }

        static void Multiply (int numberFirst, int numberSecond)
        {
            Console.WriteLine(numberFirst * numberSecond);
        }

        static void Divide(int numberFirst, int numberSecond)
        {
            Console.WriteLine(numberFirst / numberSecond);
        }

        static void Subtract(int numberFirst, int numberSecond)
        {
            Console.WriteLine(numberFirst - numberSecond);
        }

        static void Add(int numberFirst, int numberSecond)
        {
            Console.WriteLine(numberFirst + numberSecond);
        }
    }
}