kalkulator?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp5
{
    class Program
    {
        public static void kalkulator(string x)
        {
            x = "(" + x + ")";
            double wyn = double.Parse(x);
            Console.WriteLine(wyn);
        }
        static void Main(string[] args)
        {
            string rownanie;
            rownanie = Console.ReadLine();
            kalkulator(rownanie);

        }

    }
}