When the first harry potter movie came out, "the sorcerer's stone," a local book store marked all the harry potter books up by 40.5%. if "the sorcerer's stone" paperback cost $7.37 before the movie came out, how much did it cost after the mark up?

Divide those two numbers and you're answer should be within them.

10.35485 precisely, but since it's in money, the answer would be $10.35

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