A small town in Ohio is considering the purchase of a new parking system that would enhance the collection of parking fees while providing additional convenience to shoppers. The hardware costs $1300 and will be incurred immediately. The town estimates that the new system will create cash flows of $280 to be received consecutively at the end of each year, beginning in one year, for 7 consecutive years. What is the payback, in years (not in fractions of a year), of the computer package?