<human>:  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.
<bot>: How many people will be going to the fair next year? ** If there are 600 people at the fair this year, the number going to the fair next year is 2*600 = <<2*600=1200>>1200.
How many people are going to the fair in the next two years? ** The number of people at the fair this year and the ones going next year totals 1200+600 = <<1200+600=1800>>1800
How many people were at the fair last year? ** The number of people who went to that fair last year was 200 less than those going next year, meaning there were 1200-200 = 1000 people at the fair last year.
How many people will be at the fair in the next three years? ** In the three years, the number of people at the fair will be 1800 of this and next year + 1000 of last year = <<1800+1000=2800>>2800
#### 2800