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

### Instruction:
 Bert alifanikiwa kuuza simu za kuchezea 8 kwa $18 kila moja, wakati Tory alifanikiwa kuuza bunduki za kuchezea 7 kwa $20 kila moja. Bert alipata kiasi gani zaidi kuliko Tory?


### Response:
 Bert alifanikiwa kupata 8 x $18 = $<<8*18=144>>144 kwa simu za kuchezea.
Wakati Tory alifanikiwa kupata 7 x $20 = $<<7*20=140>>140 kwa bunduki za kuchezea.
Hivyo, Bert alipata $144 - $140 = $<<144-140=4>>4 zaidi ya Tory.