Suppose that currency in circulation (C) is $100 billion, the
amount of checkable deposits (D) is $750 billion, and excess
reserves (ER) are $15 billion. Also, the required reserves (RR) are
$37.5 billion. Calculate the money supply (M), the total reserves
(R), the monetary base (MB), the currency-to-deposit ratio (c), the
required reserve ratio (rD), the excess reserve-to-deposit ratio
(e), and the money multiplier (m).