Let's take your last post to pay out, to show you how much you earned.

It was this post where your total post payout was $9.43.

Of that $9.43, you earned appx: $7.10

7.1/9.43= 75.29%. You earned a little over 75% of the total payout.

Of that $7.10, $3.546 was paid out in SBD, and rest was paid out in the form of Steem Power.

You earned .943 Steem Power, which means the average price of Steem over that time period was 3.546/.943 or $3.76.

So basically, you earned 3.546 SBD and approximately $3.55 worth of Steem Power. Does that help clear things up?