system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Even with Magic, how long did it take to repair the castle after The Battle of Hogwarts?
gpt
Probably not long. Maybe a hour or two for all the specific stones to be magic back in place. 

Notice in one of the fantastic beasts movies, one of the American wizards does a spell that Magic’s a building back to normal. So stands to reason all the teachers and students would just do a bunch of the similar spell to make it go faster.