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

### Instruction:
 Gerald anataka kununua pai ya nyama ambayo inagharimu pfennig 2. Gerald ana farthing 54, na kuna farthing 6 katika pfennig. Atakuwa na pfennig ngapi zilizobaki baada ya kununua pai?


### Response:
 Kwanza, geuza idadi ya farthing ambazo Gerald anazo kuwa pfennig kwa kugawanya kwa kiwango cha ubadilishaji: farthing 54 / farthing 6/pfennig = <<54/6=9>>9 pfennig
Kisha toa gharama ya pai ya nyama ili kujua pfennig ngapi Gerald anazo zilizobaki: 9 pfennig - 2 pfennig = <<9-2=7>>7 pfennig