public ActionResult CommonDenominatorInput(CommonDenominatorModel request)
        {
            if (ModelState.IsValid)
            {
                var gcdFinder = new CommonDenominatorFinder();
                var gcdData   = new CommonDenominatorRequest();
                gcdData.UserNumerator1   = request.UserNumerator1;
                gcdData.UserDenominator1 = request.UserDenominator1;
                gcdData.UserNumerator2   = request.UserNumerator2;
                gcdData.UserDenominator2 = request.UserDenominator2;


                var result = gcdFinder.FindDenominator(gcdData);
                return(View("CommonDenominatorOutput", result));
            }
            else
            {
                return(View(request));
            }
        }
        public ActionResult CommonDenominatorInput()
        {
            var model = new CommonDenominatorModel();

            return(View(model));
        }