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

### Instruction:
Ian spent half the money he made on doing online surveys. If he worked 8 hours doing surveys and on average he's able to earn $18 per hour doing surveys, how much money does he have left?

### Response:
 Jumla ya pesa ambayo Ian alipata kwa kufanya utafiti ni $18/saa * 8 masaa = $<<18*8=144>>144
Kiasi cha pesa ambacho Ian alitumia ni $144 * 0.5 = $<<144*0.5=72>>72
Kiasi cha pesa ambacho Ian anabakiwa nacho ni $144 - $72 = $<<72=72>>72