I already knew about it. I just went with random numbers.
(7 + 6) ^ 0 = 9/9
14564
BTW, guys, I have attached an answer key to this game, created from a C++ program coded by moi~
Just order the 5 digits in descending order and Ctrl+F for it. So if you want to find the answer to my post, you have to look for "65441" in the answer key.