>>513225001
You don't need that much time for any subject. That's the nominal time school forces you to waste because of retards.
2-3 hours a day is enough for everything.

>>513225038
Being self-employed or working in a small family business used to be the norm before mandatory schooling.
If you bothered to learn about the history of mandatory schooling, you'd know its true purpose.
Spoiler: it's nothing good.