and spending my life on dealing with idiots.

All so you can do the whole thing again in college

You went to school 24h/ day for 13 years? You must be hungry...

With the correct math, its 17,640 hours

If all you got were those two things, you missed out on a lot of learning. The fact that you can read and multiply shows you actually did learn something, although taking the hours 24/7 shows you didn't absorb any logic or sense, which may account for the wrongly placed feelings of anger. Now that you've graduated and have that piece of paper, you can get a job and use all the knowledge you already had but nobody would hire you without that diploma.