using System;

using System.Threading.Tasks;

​

public class Program

{

    async static Task A4() { await B4(); }

    async static Task B4() { await C4(); }

    async static Task C4() { await D4(); }

    async static Task D4()

    {

        Console.Write("Enter the divisor: ");

        var n = int.Parse(Console.ReadLine());

        Console.WriteLine((24 / n).ToString());

​

        // return new TaskCompletionSource<object>().Task;

        // return Task.FromResult<object>(null);

        // return Task.FromResult<bool>(false);

        // return Task.FromResult(0);

    }

​

    public static void Main()

    {

        D4();

    }

}