Young Harry liked numbers, he liked using numbers and working out the value of things. When he found out that he was a wizard and had a big pile of gold... well, he had something new to calculate. oneshot, complete, don't own.

With all the crappy stuff Harry goes through at Hogwarts, the smart money would be on him transferring to a different, better school early in his career. Here’s one way it might have happened. No planned pairings.