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

### Instruction:
James needs to get a new pair of glasses.  His frames cost $200 and the lenses cost $500.  Insurance will cover 80% of the cost of lenses and he has a $50 off coupon for frames.  How much does everything cost?

### Response:
 Anapata 500*.8=$<<500*.8=400>>400 punguzo kwenye gharama ya lensi
Hivyo lensi gharama ni 500-400=$<<500-400=100>>100
Fremu gharama ni 200-50=$<<200-50=150>>150
Hivyo anatoa 100+150=$<<100+150=250>>250