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

### Instruction:
 Raul alikuwa na $87 za ziada hivyo akaamua kwenda dukani la vitabu. Raul alinunua vitabu 8, kila kimoja kikiwa na gharama ya $4. Raul ana pesa ngapi zilizobaki?


### Response:
 Alichukua vitabu 8 × $4/vitabu = $<<8*4=32>>32 kwa vitabu.
Raul ana $87 - $32 = $<<87-32=55>>55 zilizobaki.