What is wrong with this code ?

Question

I tried using this code on the Hovercraft code coach, but it keeps showing error. Please can anyone tell me what's wrong with it. My language is c#. Here's the code below.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int Sales = 21,000,000;
int Hovercrafts = Convert.ToInt32(Console.WriteLine());
int Income = Hovercrafts*3,000,000;
if (Income > Sales)
{
Console.WriteLine("Profit");
}
else if (Income == Sales)
{
Console.WriteLine("Broke Even");
}
else if (Income < Sales)
{
Console.WriteLine("Loss");
}
else
{
Console.WriteLine("No match");
}

}
}
}

Answer 1

Make sure there are no commas in the numbers, that is a strict error.

Answer 2

quita los if despues de los else

Answer 3

using System;

namespace ConsoleApp2
{
class Program
{

static void Main(String[] args)
{
int Sales = 21000000;
int Hovercrafts = Convert.ToInt32(Console.Read());
int Income = Hovercrafts * 3000000;

if (Income > Sales)
{
Console.WriteLine("Profit");
}

else
{
if (Income == Sales)
Console.WriteLine("Broke Even");
}

}

}
}