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

### Instruction:
Trevor and two of his neighborhood friends go to the toy shop every year to buy toys. Trevor always spends $20 more than his friend Reed on toys, and Reed spends 2 times as much money as their friend Quinn on the toys. If Trevor spends $80 every year to buy his toys, calculate how much money in total the three spend in 4 years.

### Response:
 Ikiwa Trevor anatumia $20 zaidi ya Reed kila mwaka kununua vitu vya kuchezea, Reed anatumia $80-$20 = $60.
Jumla ya pesa ambayo wawili hao wanatumia kununua vitu vya kuchezea ni $60+$80 = $140.
Kwa kuwa Reed anatumia mara mbili ya pesa anayotumia Quinn kununua vitu vya kuchezea, Quinn anatumia $60/2 = $30 kila mwaka kununua vitu vya kuchezea.
Jumla ya pesa watatu hao wanatumia kununua vitu vya kuchezea ni $140+$30 = $170.
Jumla ya pesa watatu hao watatumia kununua vitu vya kuchezea katika miaka 4 ni $170*4 = $680.