What is the value of the expression 3/8 ÷ 1 1/2

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Precalculus question, image attached.