using System;

public class Program

{

    public static void Main()

    {

        int textBox1 =300;

        int textBox2 = 0;

        int loopIncrement = 100;

        int textBox2Increment = 0;

        for(int i = 0; i <= textBox1; i+=loopIncrement)

        {

            textBox2 += textBox2Increment;

            textBox2Increment = 2;

        }

        Console.WriteLine(string.Concat("Amount is:" + textBox2));

    }

}