Your payout is worked out as follows:
Each time one of your hubs is viewed, you get .6 of an impression (so if you have 10 views you get 6 impressions).
This is multiplied by your CPM (which is a secret, so don't tell anyone) which is the amount you earn for 1,000 impressions.
So, say that you get 1,000 views and your CPM is $5. You get 600 impressions multiplied by 600/1000 of $5 which is $3.
You get 600 impressions