Cullumber Company is considering a long-term investment project called ZIP.ZIP will require an investment of $131,240. It will have a useful life of 4 years and no salvage value. Annal cash inflows would increase by $79,600, and annual cash outflows would increase by $41,000. Compute the cash payback period. (Round answer to 2 decimal places, e.g. 10.52.) Cash payback period years.