using System;

public class Program

{

    public static void Main()

    {

        double up = 1.605;

        double down = 0.334;

        var upRounded = string.Format("{0:0.00}", up);

        var downRounded = string.Format("{0:0.00}", down);

        var upRoundedMathRound = Math.Round(up, 2);

        var downRoundedMathRound = Math.Round(down, 2);

        Console.WriteLine(upRounded);

        Console.WriteLine(downRounded);

        Console.WriteLine(upRoundedMathRound);

        Console.WriteLine(downRoundedMathRound);

    }

}