Rock Solid Bank and Trust (RSB&T) offers only checking accounts. Customers can write checks and use a network of automated teller machines. RSB&T earns revenue by investing the money deposited; currently, it averages 6.00 percent annually on its investments of those deposits. To compete with larger banks, RSB&T pays depositors 0.60 percent on all deposits. A recent study classified the banks annual operating costs into four activities:

Activity	Cost Driver		Cost	Driver Volume
Using ATM	Number of uses	$	1,725,000		2,300,000	uses
Visiting branch	Number of visits		845,000		169,000	visits
Processing transaction	Number of transactions		7,304,000		83,000,000	transactions
Managing functions	Total deposits		7,050,000	$	470,000,000	in deposits
Total overhead		$	16,924,000

Data on two representative customers follow:

	Customer A			Customer B
ATM uses		270			320
Branch visits		7			19
Number of transactions		50			2,400
Average deposit	$	7,900		$	7,900

Required: a. Compute RSB&T's operating profits. Operating profit