Formula used by exoclick/ero?

Hey guys,

Does anyone here know what is the formula used by Exoclick or Ero to Publishers?
I found a formula in the exoclick's website, but I took some stats that I had there as an Advertiser, and I know for sure that they doesn't pay so much.

Thanks

What do you mean formula? Whats an ad network have to do with blogging?

Can you elaborate so we can help?