Calculator in C# Template

using System;
using System.Net;
using System.Threading;

namespace Calculator
{
    class Calculator
    {
        static void Main(string[] args)
        {

            // Character Variables

            char plus = '+';

            char minus = '-';

            char division = '/';

            char multiply = '*';

            // Intro

            Console.WriteLine("Welcome to Calculator!");

            Console.WriteLine("");

            Console.WriteLine("Made by Aleksandar!");

            Console.WriteLine("");

            // Number 1

            Console.Write("Choose your first number : ");

            string number1 = Console.ReadLine();

            int num1 = Convert.ToInt32(number1);

            Console.WriteLine("");

            // Number 2

            Console.Write("Choose your second number : ");

            string number2 = Console.ReadLine();

            int num2 = Convert.ToInt32(number2);

            Console.WriteLine("");

            // Operation

            Console.Write("Choose your operation (+, -, *, /) : ");

            string operation = Console.ReadLine();

            Console.WriteLine("");

            // Answer

            if (operation == Convert.ToString(plus))
            {
                Console.WriteLine("The answer is : ");

                Console.WriteLine("");

                Console.Write(number1 + " + " + number2 + " = ");

                Console.Write(num1 + num2);

                Console.WriteLine("");
            }
            else if (operation == Convert.ToString(minus))
            {
                Console.WriteLine("The answer is : ");

                Console.WriteLine("");

                Console.Write(number1 + " + " + number2 + " = ");

                Console.Write(num1 - num2);

                Console.WriteLine("");
            }
            else if (operation == Convert.ToString(division))
            {
                Console.WriteLine("The answer is : ");

                Console.WriteLine("");

                Console.Write(number1 + " + " + number2 + " = ");

                Console.Write(num1 / num2);

                Console.WriteLine("");
            }
            else if (operation == Convert.ToString(multiply))
            {
                Console.WriteLine("The answer is : ");

                Console.WriteLine("");

                Console.Write(number1 + " + " + number2 + " = ");

                Console.Write(num1 * num2);

                Console.WriteLine("");
            }

            // Outro

            Console.WriteLine("");

            Console.WriteLine("Thank you for using calculator!");

            Console.WriteLine("");

            // Program keeps running

            Console.ReadLine();

        }
    }
}