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

### Instruction:
John sublets his apartment to 3 people who each pay $400 per month.  He rents the apartment for $900 a month.  How much profit does he make in a year?

### Response:
 Anapata 3*$400=$<<3*400=1200>>1200 kwa mwezi
Hivyo anapata 1200*12=$<<1200*12=14400>>14,400 kwa mwaka
Hivyo anatoa 12*900=$<<12*900=10800>>10800 kwa mwaka
Hii inamaanisha faida yake ni 14400-10800=$<<14400-10800=3600>>3600 kwa mwaka