Assignemnt #25 and A Dumb Calculator

Code
/// Name: Yordan Rashkov
/// Period: 7
/// Program Name: A Dumb Calculator
/// File Name: DumbCalculator.java
/// Date Finished: 10/08/2015

import java.util.Scanner;

public class DumbCalculator
{
    public static void main( String[] args )
    {
        double number1, number2, number3;
        
        Scanner keyboard = new Scanner(System.in);
        
        System.out.print( " What is your first number? " );
        number1 = keyboard.nextDouble();
        
        System.out.print( " What is your second number? " );
        number2 = keyboard.nextDouble();
        
        System.out.print( " What is your third number? " );
        number3 = keyboard.nextDouble();
        
        System.out.println( "( " + number1 + " + " + number2 + " + " + number3 + ")" + " " + "/" + " " + "2 is..." + ((number1 + number2 + number3) / 2  ));
    }
}