Methods/Multiply Even By Odd

using System;
using System.Linq;

namespace Methods
{
    public class Methods
    {
        public static void Main()
        {
            int number = Math.Abs(int.Parse(Console.ReadLine()));

            Console.WriteLine(MultiplyEvensByOdd(number));
        }

        public static double MultiplyEvensByOdd(int number)
        {
            double sumOdd = 0;
            double sumEven = 0;

            while (number > 0)
            {
                int ostatakOfnumber = number % 10;
                number /= 10;

                if (ostatakOfnumber % 2 != 0)
                {
                    sumOdd += ostatakOfnumber;
                }
                else
                {
                    sumEven += ostatakOfnumber;
                }
            }

            return sumEven * sumOdd;
        }
    }
}