2.Northern Specialties just purchased inventory-management computer software at a cost of $1,252,950. Cost savings from the investment over the next six years will produce the following cash flow stream: $164,340, $215,240, $243,600, $534,250, $701,320, and $487,740. What is the payback period on this investment? (Round answer to 2 decimal places,e.g. 15.25.)