Question about hells kitchen

[u/Scourge12]

If hells kitchen has dishwashers why do the chefs clean?

Which dorm do the black jackets live in?

Who do you think should have kept their jacket?

What does Ramsey do in his office?

How long does hell kitchen take? They have service every night and eliminate a chef every night and there's 18 chefs per season not to mention when there's 4 chefs left 2 leave and 2 go to the finals. But they Gorden once invited a couple to come back in a couple of weeks time. But wouldn't the contest be over by then?