Current Attempt in Progress Cullumber Specialties just purchased inventory management computer software at a cost of $1.440,950. Cost savings from the investment over the next six years will produce the following cash flow stream: $128,340, $258,240, $432,600, $435,250, $794,320, and $649,740. What is the payback period on this investment? (Round answer to 2 decimal places, eg. 15.25.) Payback period is years