Sorry mate... I missed your question.
Here is a concrete example to figure out how LiskElite payouts' work:
I hade roughly 3.9K Lisk in my forging account for about a week. Today I received my share (10.9 LSK) based on 3892 LSK.
10.9 LSK (reward) divided by 0.0028 (the coefficient) equal the balance I left in my forging account for a week.
To simplify you can also calculate it the other way around:
3892 X 0.0028 = 10.8976 LSK
The proof for Thomas:
https://explorer.lisk.io/tx/9013045835012655592 
Thanks
The number doesn't seem the same for everyone though. You got 0.0028, I see crodam got 6.9/3,883 = 0.00177697656451, frumster got 9.9/4,140 = 0.00239130434783, blackswan got 2.9/1,109 = 0.00261496844004. It seems you actually got one of the best payouts, and everyone got a payment rounded to the nearest .9
Also, wouldn't it change every week based off the new voter's balance? So 0.028 isn't accurate after 1 week calculations.
Is the payout only based off your balance at payout time or your average for the week, since this would change the math
It seems like a hard number like that is not valid for long in a dynamic system. What I think is needed is a calculator or API call that takes into account the current valid (I'm guessing verified and voting for at least the 56 members) voter's balance for the pool. This would need to be developed by the elite group though, as no one else knows all the verified voting accounts for the pool
It would be great if they had an API call that bioly could use to add to his calculator
