something that is very easy to do and usually profitable

बहुत ही आसान काम जो सामान्यतः फायदेमंद हो

English Usage: The job was so simple, it was like money for old rope.

Hindi Usage: यह काम इतना आसान था कि यह जैसे आसान पैसा कमाने का तरीका था।