public void testMath25() {
    String expression = "51 * (40 - 1000 * 50) + 100 + 50 * 20 / 10 + 11 + 12 - 80";
    double val = 51 * (40 - 1000 * 50) + 100 + 50 * 20 / 10 + 11 + 12 - 80;
    System.out.println("Expression: " + expression);
    System.out.println("Expected Result: " + val);
    assertEquals(val, test(expression));
  }