Need help with simple math in figuring out stats

I'm brain dead

[spaceylacie]

I know that if I have 18,411 adsense views and make $56.50, my eCPM is about $3.00. But what are the actual numbers I type into the calculator to figure this out exactly?

I changed a channel in the middle of the day, and had to subtract the data from the previous part of the day, so I don't have Google to do the exact math for me. Can someone just give me a quick answer? Thanks. I missed that thing called school so I only know how to estimate stuff. How I've gotten by this far is beyond me.

[hunderdown]

Divide the $56.50 by the number of thousands of impressions. So divide it by 18.4.

[spaceylacie]

Thanks so much for the quick reply. ;-) Got it.

[novice]

Here is an easy way to figure your eCPM base on your numbers.

Take the total impressions (18,411) and divide it by 1000 which will give you 18.411.

Now take your earnings (56.50) and divide it by (18.411) and that will give you the exact eCPM 3.01

56.50 divide by 18.411 = 3.01

/edit/ hunderdown beat me to it while I was doing the actual math :)