What are Bank Uno's deposits in Table 2? - $4691 (deposits)
What are Bank Uno's reserves in Table 2? - $328.37 (4691 x 7%)
What are Bank Duo's loans in Table 3? - $4057.25 (4362.85 x 93%)
What are Bank Uno's loans in Table 2? - $4362.85 (4691 - 328.37)
Loans made by a bank do not affect the money that the bank owes to its depositors (the liabilities side of the T‑account), so its deposits in Table 2 remains $4691.00. Assuming that banks do not keep any excess reserves, Bank Uno will only keep 7.00% of its deposits and loan out 93.00%. This means it keeps reserves of $328.37 and makes loans of the remaining $4362.63 .
When the $4362.63 gets deposited into Bank Duo, the bank similarly keeps 7.00 % and loans the remaining $4057.25 . Note that each of these series of deposits and loans increases the money supply by a smaller and smaller amount. Eventually, when this process completes, the money supply will be increased by a factor of 14.29 (assuming that all loans get redeposited and no bank keeps more than the minimum reserves; otherwise, it will increase by a smaller factor). How is this money multiplier calculated?
money multiplier = 1 / required reserve ratio = 1 / 7.00% = 14.29