using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        double input = 609;

        double rpm = 10000;

        List<double> gears = new List<double>();

        gears.Add(14 / 3);

        gears.Add(9 / 3);

        gears.Add(3 / 2);

        gears.Add(2 / 2.5);

        gears.Add(1 /1);

        gears.Add(0.5 / 1);

        gears.Add(0.25 / 1);

        foreach (double g in gears)

        {

            Console.WriteLine(input * g + "   ///   " + 100/ input * (input * g));

        }

        Console.WriteLine("--------------------------");

        foreach (double g in gears)

        {

            Console.WriteLine(rpm / g + "   ///   " + 100/rpm * rpm / g);

        }

    }

}