Месечни разходи

using System;

namespace Купа
{
    class Program
    {
        static void Main(string[] args)
        {
            var months = double.Parse(Console.ReadLine());

            double electricity = 0;
            double water       = 0;
            double internet    = 0;

            double other       = 0;
            double average     = 0;

            for (int i = 0; i < months; i++)
            {
                var elBills = double.Parse(Console.ReadLine());

                electricity += elBills;
                water       += 20;
                internet    += 15;
            }
            other = (electricity + water + internet )* 1.20  ;
            average = (electricity + water + internet + other ) / months;

            Console.WriteLine($"Electricity: {electricity:f2} lv");
            Console.WriteLine($"Water: {water:f2} lv");
            Console.WriteLine($"Internet: {internet:f2} lv");
            Console.WriteLine($"Other: {other:f2} lv");
            Console.WriteLine($"Average: {average:f2} lv");
        }
    }
}