how to calculate CPC earning. why and how it fluctuate/ drops down in a day in detail (urdu /hindi)

in this video, i have tried to explain the CPC calculation in Adsense for youtube and also told / explain how it fluctuate or drops down or up even during a day and why it fluctuate.. I discussed in detailed. Hopeful that you will understand. if you found my video helptful please like and share and also subscribe the channel. youtube and adsense related videos like page rpm, page view, active view, impression etc i have already uploaded and many are yet to be uploaded (INSHA ALLAH)