Please help with the last part, it is driving me nuts, I cannot figure it out

Compute and Compare ROE, ROA, and RNOA Graphical representations of the KLA-Tencor 2018 income statement and average balance sheet numbers (2017-2018) follow ($ thousands). KLA-Tencor Average Balance Sheet 2017-2018 $1,473,464 $2,627 235.5 KLA-Tencor Income Statement 2018 $802,265 $2,583.930 O $653,666 - - $2,499,507 $81,263 -$2,948,529 $1,518,371 Operating assets Nonoperating assets Operating abilities Nonoperating abilities Equity Operating expenses Tax expense Interest expense, net Net income Note: Round all answers to two decimal places (ex: 0.12345 = 12.35%) Note: Assume a statutory tax rate of 22%. a. Compute return on equity (ROE). 54.45 % b. Compute return on assets (ROA). 14.39 % C. Compute return on net operating assets (RNOA). 92.48 X %