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

### Instruction:
 Carrie anataka kununua iPhone mpya. iPhone mpya inagharimu $800. Anaweza kubadilisha Samsung Galaxy yake kwa $240. Anaweza kupata $80 kwa wiki kwa kulea watoto. Anapaswa kufanya kazi kwa wiki ngapi kabla hajaweza kununua iPhone?


### Response:
 Gharama jumla ya iPhone itagharimu Carrie $800 - $240 = $<<800-240=560>>560.
Itamchukua wiki $560 / $80 = <<560/80=7>>7 kujipatia pesa za kutosha.