All you really have to do to solve this puzzle is pay close attention to the map, write down all the numbers the statues give you, and do the math. First, it tells you to take the secret number. This is the number you can see when you look at the Top Jouster's room on the map: 29. Then you have to add the numbers on the statues of Fire Hood(16), and Desert Breeze(200), which makes 245. Next, substract Frost Wing(7), Forest Green(8) and Phantom Sorrow(73). That's 157 left. The final step is multiplying by Shadow Grave(2), and there you have your answer: 314.