solve it correctly , please. i need tge correct answer for "accounting rate of return"

Lakeside Incorporated is considering replacing old production equipment with state-of-the-art technology that will allow production cost savings of $10,000 per month. The new equipment will have a five-year life and cost $450,000, with an estimated salvage value of $40,000. Lakeside's cost of capital is 9%. Lakeside Incorporated uses a straight-line depreciation method. Required: Calculate the payback period and the accounting rate of return for the new production equipment. Note: Round your answers to 2 decimal places. Answer is complete but not entirely correct