public class AverageOfGivenNumbers {

    // implement here again the method of exercise 43
    public static int sum(int number1, int number2, int number3, int number4) {
        int numberSum = number1 + number2 + number3 + number4;
        return numberSum;
    }

    public static double average(int number1, int number2, int number3, int number4) {
        double numberAverage = (double)sum(number1, number2, number3, number4) /  4;
        return numberAverage;
    }

    public static void main(String[] args) {
        double result = average(4, 3, 6, 1);
        System.out.println("Average: " + result);
    }
}