using System;

public class Program

{

    public static void Main()

    {

        double incorrecto = (double)((1 + 2) / 4);

        Console.WriteLine(incorrecto);

        double correcto = ((double)(1+ 2)) / 4;

        Console.WriteLine(correcto);

        Console.WriteLine("2 + 3 = " + 2 + 3);

        Console.WriteLine("2 + 3 = " + (2 + 3));

    }

}