Need assistance in calculating the return on total assets.

Calculate the return on total assets ratio based on the following information: cash = $14,870; accounts receivable = $22.108: prepaid $3.010: supplies = $927: equipment = $62 150: accumulated depreciation = 13,750; accounts payable = 28,000; net sales = $325,000; interest expense $6,000; tax expense = $12,600; earnings before interest and taxes = $122,623; number of shares outstanding = 335,000. Round to two decimal places, and assume this is the first year of operations, so beginning total assets equal $0