Electron borrowing

Ever wonder how many electrons we borrow from the electric companies for our energy bills (aka, paying for electricity)? Say you use like 9600 mWH per hour (a random number), someone here tell me how many electrons are flowing to produce that kind of power. From there you can possibly compare it to your electric bill and figure out how much money we pay per electron. Not too challenging, have a go at it.

For more accurate results, perhaps someone should post the results of one of their electric bills to see some real world results. Have fun.

>>5
see >>4
the electrons exist already in the plug of the electrical device;
they receive then the energy eletric provided by the flow of the alternated current and then the device works.