Can't get it to loop back to the question

I need it to loop back to the question, so they can get more questions.

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

namespace mathGame
{
    class Program
    {
        static void Main(string[] args)
        {
            var rng = new Random();
            int numberOne = rng.Next((int)1, (int)100);
            int numberTwo = rng.Next((int)1, (int)100);
            int decider = rng.Next(0, 3); // decides EVERYTHING

            // operators
            int addition = (numberOne + numberTwo);
            int subtraction = (numberOne - numberTwo);
            int multiplication = (numberOne * numberTwo);
            int division = (numberOne / numberTwo);

            // LIST
            List<int> randomOperator = new List<int>(3);
            randomOperator.Add(addition);
            randomOperator.Add(subtraction);
            randomOperator.Add(multiplication);
            randomOperator.Add(division);

            List<string> operatorName = new List<string>(3);
            operatorName.Add("+");
            operatorName.Add("-");
            operatorName.Add("*");
            operatorName.Add("/");

            string sign = operatorName[decider];
            int answer = randomOperator[decider];



            Console.WriteLine("What's " + numberOne + sign + numberTwo);
            var correct = Console.Read();


                if (correct == answer)
                {
                    Console.WriteLine("1");
                }

                else if (correct != answer)
                {
                    Console.WriteLine("2");
                }
        }
    }
}

When they get it correct/incorrect it will show a new equation. This is meant to be an infinite math game and I can't get it to display more than one equation, since it won't loop back to the question.