public void Test2()
        {
            string formula = "2 *[BankRate] *10/[Period]+ [Price]+ 5-10";
            Dictionary <string, double> dic = new Dictionary <string, double>();

            dic.Add("Price", 10);
            dic.Add("BankRate", 5);
            dic.Add("Period", 5);
            FormulaParser formulaParser = new FormulaParser();
            var           result        = formulaParser.CalculateFormula(formula, dic);

            Assert.AreEqual(25, result);
        }