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

### Instruction:
James pays $1000 for advertising.  It brought 100 customers to his site and 80% of those bought something at the store that cost $25.  How much profit does he gain from the ad?

### Response:
 100*.8=<<100*.8=80>>80 wateja walikununua kitu
Hii inamaanisha walikuwa na thamani ya 80*25=$<<80*25=2000>>2000
Hivyo, alipata faida ya 2000-1000=$<<2000-1000=1000>>1000 kutoka kwenye matangazo.