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

### Instruction:
The population of Port Perry is seven times as many as the population of Wellington. The population of Port Perry is 800 more than the population of Lazy Harbor. If Wellington has a population of 900, how many people live in Port Perry and Lazy Harbor combined?

### Response:
 Idadi ya watu wa Port Perry ni mara saba ya idadi ya watu wa Wellington ambayo ni 900*7 = <<900*7=6300>>6,300
Idadi ya watu wa Lazy Harbor ni 6,300-800 = <<6300-800=5500>>5,500
Jumla ya idadi ya watu ni 6,300+5,500 = <<6300+5500=11800>>11,800