Hello infamusfriend,
My conclusion right now, is that the amount shown is actually dollars instead of sbd. I know for sure that the rewards are divided into 25% curator rewards, and 75% author rewards. You can see my explanation on that by clicking on the link below.
Cryptoblogger (lets build Steemit together!)
Follow me:
https://steemit.com/@jean-paulc
Check out my guide on Steemit rewards: https://steemit.com/cryptocurrency/@jean-paulc/how-do-steem-rewards-work