Crane Specialties just purchased inventory-management computer software at a cost of $1,393,950. Cost savings from the investment over the next six years will produce the following cash flow stream: $186,340, $219,240, $299,600, $567,250, $791,320, and $582,740. What is the payback period on this investment? (Round answer to 2 decimal places,e.g. 15.25.) Payback period is years