How about we try to look at the same concept a little differently?
There are 10 people in a room.
They each owe someone in the room $50.
They form a circle so that the one who owes the money stands to the left of the person who loaned it to them.
The very first one passes his $50 bill to the right and says we are even, here is your $50.
Then that person takes the same $50 and passes it to the one to his right and says here we are even.
This repeats until the same $50 bill winds up back to the very first one.
They have all paid their $50 debt and it cost each nothing!!!!
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