Please help me with this question finding an Accounting rate of return. first i got 18.1818 and second time i got 60% it still showed wrong. please help

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 $420,000, with an estimated salvage value of $20,000. Lakeside's cost of capital is 10%. 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. Mini-Exercise 16-8 (Algo) Payback period and accounting rate of return LO 16-9, 16-10 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 $420,000, with an estimated salvage value of $20,000. Lakeside's cost of capital is 10%. 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