static void Main(string[] args)
        {
            InputConverter   inputConverter   = new InputConverter();
            CalculatorEngine calculatorEngine = new CalculatorEngine();

            double firstNumber  = inputConverter.ConvertInputToNumberic(Console.ReadLine());
            string operation    = Console.ReadLine();
            double secondNumber = inputConverter.ConvertInputToNumberic(Console.ReadLine());

            Console.WriteLine("=");

            double result = calculatorEngine.Calculate(operation, firstNumber, secondNumber);

            Console.WriteLine(result);
            Console.ReadLine();
        }
        static void Main(string[] args)
        {
            try
            {
                InputConverter   inputConverter   = new InputConverter();
                CalculatorEngine calculatorEngine = new CalculatorEngine();

                double firstNumer   = inputConverter.ConvertInputToNumberic(Console.ReadLine());
                double secondNumber = inputConverter.ConvertInputToNumberic(Console.ReadLine());

                string operation = Console.ReadLine();

                double result = calculatorEngine.Calculate(operation, firstNumer, secondNumber);
                Console.WriteLine(result);
            }
            catch (Exception ex)
            {
                //in production I'd want to log any message
                Console.WriteLine(ex.Message);
            }
        }