using System;

using Humanizer;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(0.ToMetric(hasSpace: true) + "Wh");

        Console.WriteLine(1.ToMetric(hasSpace: true) + "Wh");

        Console.WriteLine(1000.ToMetric(hasSpace: true) + "Wh");

    }

}