Can somebody help me with this question

          <p>
          ```
using System;

namespace Treehouse.FitnessFrog
{
    class Program
    {
        static void Main()
        {
          int runningTotal = 0;
          bool keepGoing = true;

          while (keepGoing)
          {
               //  Prompt the user for minutes exercised
           Console.Write("Enter how many minutes exercised:  or type \"quit\" to exit: ");
           string entry = Console.ReadLine(); 

            if(entry == "quit")
           {
             keepGoing = false;
           }
           else 
              {

               int minutes = int.Parse(entry);
               runningTotal = runningTotoal + minutes;
               Console.WriteLine("You have entered " + runningTotal + " minutes.");

              }
          }
          Console.WriteLine("Goodbye");

        }
    }
}

</p>
          ```
this thing ---->   Program.cs(29,31): error CS0103: The name `runningTotoal' does not exist in the current context                    
Compilation failed: 1 error(s), 0 warnings   , i check over and over again have no idea what when wrong.......                          
thankyou for your help!