Earlier quoted context omitted.
So the depositor put $1,000,000 in the bank and the bank loans $850,000 to a small business so it can buy more inventory. The small business goes to the widget manufacturer and writes a check which the manufacturer deposits into the bank. So now the bank has 1,850,000 in deposits and 850,000 in loans. The bank takes the new deposits and loans out 85% of it ($723k) to another small business. This small business goes a…
Because doing it one time, or 10 times, or 1,000 times doesn't change anything about how it works. If everybody pays all their debts, it all adds back up to $1,000,000 in cash (plus interest for the bank(s)).
It absolutely matters how many times the dollars come back to the bank because that is the pathway that lets the bank loan the same original dollar out multiple times.