Money Kumar: Currency chest branches are regular bank branches but with bigger responsibilities. They act like extended arms of the RBI and facilitate the distribution of fresh notes to the public. They are also responsible for withdrawing soiled notes from the system.
Children: We don't quite understand. Can we go see one?

Money Kumar takes them to a Currency Chest branch.

The ice-cream seller and the kids exchange the mutilated notes and get fresh notes in exchange.

Ice-cream seller: You know, my mother in the village has some more notes like these. Will you exchange them too?

Cashier: Sure! Your mother needn't even come here. She can send them to us through registered post and we will send her the value of those notes by money order or a demand draft.