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

### Instruction:
 John anakata miti 30. Kutoka kwa kila mti, anaweza kutengeneza mbao 25. Meza inachukua mbao 15 kutengenezwa na inauzwa kwa $300. Alilipa $3000 kwa kazi yote. Alipata faida kiasi gani?


### Response:
 Alipata mbao 30*25=<<30*25=750>>750
Hivyo anaweza kutengeneza meza 750/15=<<750/15=50>>50
Hiyo inamaanisha anapata 50*300=$<<50*300=15000>>15000
Hivyo faida yake ilikuwa 15000-3000=$<<15000-3000=12000>>12000