How would I return result back to the main method in my program?

public void methodName(){ System.out.println("Enter in the number of doors:"); Scanner getInfo = new Scanner(System.in); double doorArea = 0, doorWidth, doorHeight; int doors = getInfo.nextInt(); for (int i = 1; i <= doors; i++) { System.out.println("Enter door width"); doorWidth = getInfo.nextDouble(); System.out.println("Enter door height"); doorHeight = getInfo.nextDouble(); doorArea = doorArea + (doorWidth * doorHeight); } }