Birch manufacturing is considering the addition of another product line to its offerings. Equipment needed to produce the new line will cost $209,400. Birch estimates that the net cash inflows from the new product line will be as follows:

Years 1-10 $18,270(each year)

Years 11-15 $5,340(each year)

Year 16-20 $1,930

If the company can establish a steady customer base before production starts and the cash inflows will be $16,450 per year for years 1 15, what will be the payback period? (Round answer to 2 decimal places, e.g. 1.64.)

The payback period years