Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Alvin owns coconut trees that yield 5 coconuts each. If a coconut can be sold for $3 and Alvin needs $90, how many coconut trees does he have to harvest?

### Response:
 Alvin anahitaji 90 / 3 = <<90/3=30>>30 za nazi ili apate $90
Hivyo anahitaji 30 / 5 = <<30/5=6>>6 miti ya nazi.