Blossom Specialties just purchased inventory-management computer software at a cost of $1,233,950. Cost savings from the investment over the next six years will produce the following cash flow stream: $159,340, $219,240, $290,600, $487,250, $684,320, and $463,740. What is the payback period on this investment? (Round answer to 2 decimal places,e.g. 15.25.)