Answer: 8260
Explanation:
From the decimal point (well, where it would be in this case = 8259.0) you start at the decimal and moving to the left would be tens, hundreds, thousands, etc. So once you know which digit you are looking at to round, 5 and higher, you round up, 4 and below, round down.
So if it was 8253 it would have been 8250.