If that's 2398 liters, it's already rounded to the nearest liter. If it's some other unit of measure, you should indicate what it is.
Ah, rounding numbers can be quite fun! If we look at 2398 and want to round it to the nearest 10, we see that the last digit is 8, which is closer to 10 than 0. So, 2398 rounded to the nearest 10 is 2400. Just a little adjustment to make the number more comfortable and pleasing to the eye.
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
5800
0
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
0
10000
0
678 is rounded nearest hundred is 700
0