The math is pretty straightforward evaluation of the arithmetic.
3000√32/0.196
= 3000*5.656854/0.196
= 16970.5627/0.196
= 86,584.5
Then you are asked to round this value to the nearest 1000.
There are a couple of ways you can round to the nearest 1000. One of them is this:
.. a) add half a thousand (500)
.. .. 87,084.5
.. b) set every digit to the right of the 1000s digit to zero
.. .. 87,000
_____
The other way to round to the nearest 1000 is to look at the 100s digit (5). If it is 5 or more, which it is, increase the 1000s digit by 1. That makes the 1000s digit increase from 6 to 7. Now, make all the digits to the right of the 1000s digit be zero. You have
.. 87,000
