You already have 2,000, so you look at the number in the next to it which would be 6. If the number is over 5 than you round up and if it is under 5, you would just keep the original number the same without including the other numbers.
2,617 6 is over 5 so you round up. They asked to round to the nearest thousand. 2 is in the thousand place, so rounding up the number makes it a 3
