public void testMath27() {
    String expression = "50 + 30 * 80 * 20 ** 3 * 51";
    double val = 50 + 30 * 80 * Math.pow(20, 3) * 51;
    System.out.println("Expression: " + expression);
    System.out.println("Expected Result: " + val);
    Object result = test(expression);
    assertEquals((int) val, result);
  }