using System;

public class Program

{

    public static void Main()

    {

        double price, commission; 

        int t_shirt; 

        Console.Write("price:");

        price = double.Parse(Console.ReadLine());  

        Console.Write("t-shirt:");   

        t_shirt = int.Parse(Console.ReadLine());  

        commission = (t_shirt * price) * 0.12 ; 

        Console.WriteLine(commission);

    }

}

​