public static void main(String[] args) {

        Add t1 = new Add();
        Mul t2 = new Mul();

        t1.start();
        t2.start();

        try {
            t1.join();
            t2.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        double n = ((double)t1.value/t2.value);

        System.out.println(n);

    }