Largest Product of Digits

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

namespace _06.Largest_Product_Of_Digits
{
    class Largest_Product_Of_Digits
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            int product = 1;
            int maxProduct = int.MinValue;
            int currentPosition = 0;
            for (int i = 0; i < input.Length; i++)
            {
                for (int j = 0; j < 6; j++)
                {
                    product *= Convert.ToInt32(input[currentPosition] - 48);

                    if (currentPosition < input.Length - 1)
                    {
                        currentPosition++;
                    }
                }
                if (product > maxProduct)
                {
                    maxProduct = product;
                    product = 1;
                }
                else
                {
                    product = 1;
                }
                currentPosition = i + 1;
            }
            Console.WriteLine(maxProduct);
        }
    }
}