Approximate

Your magic quickly flows over an area to help
you count and catalog. Name a particular type of
object you are looking for within the area. You
gain an instant estimate of the quantity of the
chosen objects that are clearly visible within the
target area. The number is rounded to the largest
digit. For example, you could look at a pile of
180 copper coins, and you would learn that it
held about 200 coins, but you couldn't
determine there were exactly 180 coins.