Sheridan Specialties just purchased inventory-management computer software at a cost of $2,015,950. Cost savings from the investment over the next six years will produce the following cash flow stream: $201,340, $354,240, $336,600, $552,250, $793,320, and $598,740. What is the payback period on this investment? (Round answer to 2 decimal places,e.g. 15.25.)