You are rounding to the nearest thousand. Look at the place value to the right (hundreds in this case). If it is 5 or greater (as in this case), round up. If it is 4 and lower, round down.
59,838, becomes 60,000.
Note that because it is already a 9, when it is rounded up, it will change the next place value too.
60,000 is your answer
hope this helps