Loops - Factoriel Devision

using System;

class Program
{
    static void Main(string[] args)
    {
        //Option 1
        bool successParse;
        int enteredN, enteredK;
        int valueN = 1;
        int valueK = 1;

        do
        {
            Console.Write("Enter N: ");
            int.TryParse(Console.ReadLine(), out enteredN);
            Console.Write("Enter K: ");
            successParse = int.TryParse(Console.ReadLine(), out enteredK);

            if (enteredK > enteredK || enteredK <= 1)
            {
                successParse = false;
            }

        } while (!successParse);

        for (int i = 1; i <= enteredN; i++)
        {
            valueN = valueN * i;
        }

        for (int i = 1; i <= enteredK; i++)
        {
            valueK = valueK * i;
        }
        Console.WriteLine("Factoriel !N is: {0}", valueN);
        Console.WriteLine("Factoriel !K is: {0}", valueK);
        Console.WriteLine("The devision is: {0}", valueN/(double)valueK);

        //Option 2
        valueN = 1;
        for (int i = enteredK+1; i <= enteredN; i++)
        {
            valueN *= i;
        }
        Console.WriteLine("Option 2");
        Console.WriteLine("The devision is: {0}", valueN);
    }
}