Ineed with #57. i got wrong answer and don't know what i did wrong

Question 5 spring semester final exam math evaluate

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5