If you're doing the median of a set of numbers (which I suspect you're trying to do)...
Add 8.5 + 8.6, which is 17.1
Divide 17.1 by 2. This is 8.55. Your median would be 8.55.
If you're not talking about the median I suggest you wait for more answers! God bless and good luck! <3 :)
