Where and how to exchange large bills for small ones?
The easiest way out, of course, is where there is little money. For example, you can go to the nearest store or take a minibus, although most likely you will have to pay for the trip, but if there is no stall or store nearby, then it will come.
You can "exchange large notes into small ones" in any branch of any bank. Just go to the cashier and ask to change money. They will be checked for authenticity and your amount will be given out in the bills you ask for))