Please do something about it already.

[Iscah]

The math isn't quite right since there's 3 drops per run so they had 96 chances rather than 32. They're also likely rolling against more the 7 other people.

I incorporated that. Three chests per run means that three out of 24 people are leaving that raid with a chest, so you have a 1-in-8 chance of being one of those three people in any single run (assuming everyone rolls - your odds can only improve if some are skipping). Therefore 32 runs = 32 1-in-8 chances.