A lady buys goods worth Rs 200 from a shop, whose shopkeeper is selling the goods with zero profit.

• The lady gives him a Rs 1000 note.

• The shopkeeper gets the change from the next shop, keeps Rs 200 for himself, and returns Rs 800 to the lady.

• Later the shopkeeper of the next shop comes with the Rs 1000 note saying “fake note” and takes his money back.

How much of a loss did the shopkeeper take?