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

### Instruction:
 John ameamua kubadilisha VHS zake na DVD. Anaweza kubadilisha VHS zake kwa $2 kila moja na kisha kununua DVD kwa $10 kila moja. Ikiwa ana sinema 100, gharama ya kubadilisha sinema zake ni kiasi gani?


### Response:
 Inagharimu 10-2=$<<10-2=8>>8 kubadilisha kila sinema
Hivyo itagharimu 8*100=$<<8*100=800>>800