using System;

​

public class Example

{

   public static void Main()

   {

        string one = "120641";

        string two = "221707";

        string three = "123548";

        Double iOne = 0;

        Double iTwo = 0;

        Double iThree = 0;

​

        Double.TryParse(one, out iOne);

        Double.TryParse(two, out iTwo);

        Double.TryParse(three, out iThree);

​

        Console.WriteLine(iOne + " - " + iTwo + " - " + iThree);

   }

}

​