using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter the four numbers that you would like to calculate the average of.");

        double numero1 = double.Parse(Console.ReadLine());

        double numero2 = double.Parse(Console.ReadLine());

        double numero3 = double.Parse(Console.ReadLine());

        double numero4 = double.Parse(Console.ReadLine());

        Console.WriteLine("The average of your four numbers is " +avg(numero1, numero2, numero3, numero4)); //Btw. numero means number in Spanish. I just put it there because why not? Lol

    }

    static private double avg(double a, double b, double c, double d)

    {

        double total = a + b + c + d;

        return total / 4;

    }

}