currency converter with dictionary

using System;
using System.Collections.Generic;

public class Program
{

    public static void Main()
    {
            Dictionary<string, decimal> currency = new Dictionary<string,decimal>
            {
              {"bgn",1M },
              { "usd",1.79549M},
              {"eur",1.95583M},
              {"gbp",2.53405M}
            };

            decimal price = decimal.Parse(Console.ReadLine());
            string input = Console.ReadLine();
            string output = Console.ReadLine();

            decimal outputCurrency=currency[output];
            decimal valueInput = price * currency[input];
            decimal valueOutput = (valueInput /outputCurrency );

        Console.WriteLine("{0:f2}",valueOutput);

    }

}