drac of two number or not?

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

namespace dracula
{
   class Program
   {
       static void Main(string[] args)
       {
           int number,n1,n2,n3,sum;
           Console.WriteLine("Enter the number");
           number = Int32.Parse(Console.ReadLine());
           n1 = number % 10;
           
           number = number / 10;
           n2 = number % 10;
           number = number / 10;
           n3 = number % 10;
           sum = n2 + n3;

           if (sum == n1)
           {

               Console.WriteLine("number is dracula");
           }
           else
           {
               Console.WriteLine("number is not dracula");
           }

       }
   }
}