Additional information: The inventory turnover is 4.6 times. The return on common stockholders' equity is 21%. The company had no additional paid-in capital. The receivables turnover times. The return on assets is 17%. Total assets at December 31, 2016, were $613,800. Compute the following for Riverbed Corp. (Round all answers to o decimal place, e.g. 2,150.) (a) Cost of goods sold for 2017. (b) Net credit sales for 2017. (c) Net income for 2017. (d) Total assets at December 31, 2017