The symbol $ is not USD, it’s HTU or Hive Token Units...while they are related to dollar value, they are also affected by whether or not the post hits threshold and how many votes are cast during that reward period, and other complications.
From what I've been able to research, there's so many variables that affect it that it's impossible to predict actual payout beforehand.
I've noticed that calcs...
kinda tricky to put $tring for HTU...
that was the 1st reason for this post.. postponed for a while ;)