The nearest whole number would be 8.
Lets say that "#" is a filled in space and "()" is an empty space, out of 15.
We have 8 whole numbers (divided into fifteenths):
################
################
################
################
################
################
################
################
And six fifteenths:
######()()()()()()()()()
As you can see, the filled in space is closer to the whole number below it (8), making us round downwards, so now we only have 8 whole numbers remaining.