Odd and Even Jumps

using System;

class OddAndEvenJumps
{
    static void Main()
    {
        string input = Console.ReadLine();
        input = input.Replace(" ", string.Empty).ToLower();

        int oddJump = int.Parse(Console.ReadLine());
        int evenJump = int.Parse(Console.ReadLine());

        long odd = 0;
        long even = 0;

        for (int i = 0; i * 2 < input.Length; i++)
        {
            char currentChar = input[i * 2];
            if ((i + 1) % oddJump == 0 && i != 0)
            {
                odd *= currentChar;
            }

            else
            {
                odd += currentChar;
            }
        }

        for (int i = 0; i*2 + 1 < input.Length; i++)
        {
            char currentChar = input[i*2 + 1];

            if ((i + 1) % evenJump == 0 && i!= 0)
            {
                even *= currentChar;
            }

            else
            {
                even += currentChar;
            }
        }

            Console.WriteLine("Odd: {0:X}", odd);
            Console.WriteLine("Even: {0:X}", even);
    }

}