Houston National Bank had the following activities, traceable costs, and physical flow of driver units:

		Traceable	Physical flow of
	Activities	Costs	Driver Units
	Open new accounts	$50,000	1,000 accounts
	Process deposits	36,000	400,000 deposits
	Process withdrawals	15,000	200,000 withdrawals
	Process loan applications	27,000	900 applications

The above activities are used by the Memorial branch and the University branch:

		Memorial	University
	New accounts	200	400
	Deposits	40,000	20,000
	Withdrawals	15,000	18,000
	Loan applications	100	160

Refer to Houston National Bank. What is the cost per driver unit for the deposit activity? Please show me how to calculate the numbers.