using System;

public class Program

{

    public static void Main()

    {

        string price="499.50", vat="0.07";

        char adult='5';

        float child=3.25f;

        int C_adult, C_child;

        float C_price, C_vat, total;

        C_adult = int.Parse(adult.ToString());

        C_child = (int)child;

        C_price = float.Parse(price);

        C_vat = float.Parse(vat);

        total = ((C_adult*C_price)+(C_child*C_price/2))+(((C_adult*C_price)+(C_child*C_price/2))*C_vat);

        Console.WriteLine("ราคาผู้ใหญ่ = {0:f}",(C_adult*C_price));

        Console.WriteLine("ราคาเด็ก = {0:f}",(C_child*C_price/2));

        Console.WriteLine("ภาษี = {0:f}",(((C_adult*C_price)+(C_child*C_price/2))*C_vat));

        Console.WriteLine("ราคาสุทธิ = {0:f}",total);

    }

}