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

### Instruction:
 Sun City ina watu 1000 zaidi ya mara mbili ya idadi ya watu wa Roseville City. Roseville City ina watu 500 chini ya mara tatu ya idadi ya watu wa Willowdale City. Ikiwa Willowdale City ina watu 2000, watu wangapi wanaishi katika Sun City?


### Response:
 Roseville City ina watu 3*2000-500=<<3*2000-500=5500>>5500.
Sun City ina watu 2*5500+1000=12000.