I am not good at math so i figure i could pic some of your electrician minds. We have gotten into the habit of turning on a small fan for our daughter to have some white noise while she sleeps. i am wondering how to compute how much it costs to run the thing? Its a small fan..it says on the fan its 60hz.....8 amp...prob runs 12 hrs a day. I know it depends on how much i pay for my electric...can anyone give me an equation?