Rake It In Meaning

(idiomatic) To make a lot of money.

Example: 2008, The Observer, 5 Oct 08:
  Budget hotels are raking it in as business people feel the crunch.
2006, The Guardian, 12 Aug 06:
  Alas, geriatrics and convalescent homes, however regal, don't rake it in like moneyed metrosexuals.
1997, Stanley Lombardo, tr. Homer, The Iliad, p. 169:
  I've [...] Looted them all, brought back heirlooms / By the ton, and handed it all over / To Atreus' son, who hung back in camp / Raking it in and distributing damn little.