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

### Instruction:
Next year, there will be twice as many people going to the fair as are going this year, and the number of people who went to the fair last year was 200 less than those going next year. If the number of people going to the fair this year is 600, calculate the number of people at the fair in the three years.

### Response:
 Ikiwa kuna watu 600 kwenye tamasha mwaka huu, idadi ya watu wanaokwenda tamasha mwaka ujao ni 2*600 = <<2*600=1200>>1200.
Idadi ya watu kwenye tamasha mwaka huu na wale wanaokwenda mwaka ujao ni jumla ya 1200+600 = <<1200+600=1800>>1800
Idadi ya watu waliokwenda tamasha mwaka jana ilikuwa 200 chini ya wale wanaokwenda mwaka ujao, maana yake kulikuwa na watu 1200-200 = 1000 kwenye tamasha mwaka jana.
Katika miaka mitatu, idadi ya watu kwenye tamasha itakuwa 1800 ya mwaka huu na ujao + 1000 ya mwaka jana = <<1800+1000=2800>>2800