Teaching materials

using System;
using System.Diagnostics.Metrics;

namespace firstLesson
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int packagesOfPens = int.Parse(Console.ReadLine());
            int packetsOfMarkers = int.Parse(Console.ReadLine());
            int litersOfBoardCleaner = int.Parse(Console.ReadLine());
            int discount = int.Parse(Console.ReadLine());

            double pensPrice = 5.80 * packagesOfPens;
            double markersPrice = 7.20 * packetsOfMarkers;
            double boarderCleanerPrice = 1.20 * litersOfBoardCleaner;
            double priceOfAll = pensPrice + markersPrice + boarderCleanerPrice;
            double discountAmount = priceOfAll * discount / 100;
            double neededMoney = priceOfAll - discountAmount;

            Console.WriteLine(neededMoney);


        }
    }
}