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

### Instruction:
 Michael ananunua suti yake kwa $430 na viatu kwa $190. Kwa hivyo, akikatwa punguzo la $100, ni kiasi gani alilipa kwa muuzaji?


### Response:
 Kiasi kabla ya punguzo ni $430 + $190 = $<<430+190=620>>620.
Kiasi alicholipa kwa muuzaji baada ya punguzo ni $620 - $100 = $520.