using System;

using System.Threading.Tasks;

​

public class Program

{

    public static void Main()

    {

        while (true)

        {

            Example();

            string result = Console.ReadLine();

            Console.WriteLine("You typed: " + result);

        }

    }

​

    static async void Example()

    {

        int t = await Task.Run(() => Allocate());

        Console.WriteLine("Compute: " + t);

    }

​

    static int Allocate()

    {

        int size = 0;

        for (int z = 0; z < 100; z++)

        {

            for (int i = 0; i < 1000000; i++)

            {

                string value = i.ToString();

                size += value.Length;

            }

        }

        return size;

    }

}

​