What commission will be on the project?

Question

Upwork

Rate:
$20.00/hr
($25.00/hr charged to client) The
following is written
I will get $16 as output, right?
That is, the commission will be $ 9?
Or will I get all 20? When is the commission charged, at what stage?

Answer 1

From the first 500 dollars you will receive 20 per hour, then 22.5

Answer 2

you will receive 20 bucks from the client will be charged 25 bucks
how you got 16 and 9 is a mystery to me because I studied at and we were taught to add and add.