please answer asap with calculations and formulas used. thank you

An investment project has annual cash inflows of: Year Cash Flow 0 -135,000 1 33,000 2 32,000 3 31,000 4 30,000 5 15,000 6 7,000 7 3,000 The Discount Rate is 3%. What is the discounted payback period for these cash flows if the initial cost is $135,000? (Do not round intermediate calculations. Round the final answer to 2 decimal places.)