using NCalc2;

using System;

​

public class Program

{

    public static void Main(string[] args)

    {

        var expressions = new[]

        {

            "141 * if(IsFemale, ((1/Pow(Min((Creat/61.9),1),0.329)) * (1/Pow(Max((Creat/61.9),1),1.209)) * (0.993*Age) * 1.018), ((1/Pow(Min((Creat/79.6),1),0.411)) * (1/Pow(Max((Creat/79.6),1),1.209)) *  Pow(0.993,Age))) * if(IsAfrican, 1.059, 1.0)"

        };

        foreach (string expression in expressions)

        {

            Expression myExpr = new Expression(expression);

            myExpr.Parameters["isFemale"] = true;

            myExpr.Parameters["Creat"] = 2.02;

            myExpr.Parameters["Age"] = 50;

            myExpr.Parameters["IsAfrican"] = true;

            System.Console.WriteLine(expression + " => " + myExpr.Evaluate());

            System.Console.WriteLine(Convert.ToDecimal(myExpr.Evaluate()));

            /*

            if (myExpr.Parameters.Count > 0)

            {

                foreach (var myExprParameter in myExpr.Parameters)

                {

                    Console.WriteLine("Parameter " + myExprParameter.Key +" => " + myExprParameter.Value.ToString());

                }

            }

            */

        }

    }

}