Chances are, you’ll do this hundreds of times this year, and the total bill will come to less than a buck. What is it?

Chances are, you’ll do this hundreds of times this year, and the total bill will come to less than a buck. What is it?

Chances are, you’ll do this hundreds of times this year, and the total bill will come to less than a buck. What is it?
Ans: Charge your cell phone.