An automated check-out system costs $2.5 million to purchase and install. It is anticipated that annual cash flows will increase by $600,000 each year for the next 6 years. Your firm will only accept a project that has a payback period of less than 5 years. Calculate the payback period for this project and indicate whether or not it would be accepted:

	0	1	2	3	4	5	6
CF	-2,500	600	600	600	600	600	600