A customer purchases clothes worth 200 Rupees from a shop. customer gives 1000 Rupee note. Since shop owner does not have change, he collects change (100 * 10 notes) from the neighbor shop and gives 800 rupees back to the customer.
After few hours neighbor shop keeper tells the shop owner that 1000 rupee note is fake and collects his 1000 rupees.
So now calculate the total loss to the shop owner.
Assume that Shop owner is selling clothes without any profit.