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

### Instruction:
 John ananunua mabomu 1000. Kila bomu linaweza kuhifadhi lita 10 za hewa. Ikiwa ananunua tangi za gesi zenye lita 500, anahitaji kununua tangi ngapi ili kujaza mabomu yote?


### Response:
 Kila bomu linaweza kuhifadhi lita 10 za hewa.
Hivyo mabomu 1000 yanaweza kuhifadhi lita 1000*10=<<1000*10=10000>>10000 za hewa.
Anahitaji tangi 10000/500=<<10000/500=20>>20 za gesi.