Google Adsence RPM? Will I be rich? haha

Please Tell me what is RPM. Actually I saw it in my adsense account. Why? and What is it? Please also tell me what is its effect on my adsense earning.

It states: $983.24 Page RPM

What is $983?


When my estimated earnings are .98 cents.


Thanks and regards

Ken

Its a guess on how much you will make with 1000 page views. I wouldn't get to excited about it after all it is just a guess.