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

### Instruction:
 Sue na dada yake wanunua gari lenye thamani ya $2,100. Wamekubaliana kugawana gharama kulingana na asilimia ya siku za matumizi. Dada yake Sue atatumia gari siku 4 kwa wiki na Sue atapata siku zilizobaki. Sue anapaswa kulipa kiasi gani?


### Response:
 Sue atatumia gari siku 7-4=3 kwa wiki.
Hivyo, anapaswa kulipa 2100*3/7=$<<2100*3/7=900>>900.