Tom had a lot of homework.
He spent 37 minutes doing math.
Then he worked on a book report for 42 minutes.
He felt hungry, so he got a snack, that took 12 minutes.
Then he spent 19 minutes finishing a science lab report.
Finally, he spent 28 minutes studying for a history test before going to bed.
Tom started doing his homework at 7:30.
At what time did he finish?