PLEASE HELP!! I need help with questions 14 and 16.

Total liabilities $1,191,600$944,114 Stockholders' Equity Preferred $0.70 stock, $20 par Common stock, $10 par \begin{tabular}{rc} $200,000 & $200,000 \\ 230,000 & 230,000 \\ 1,059,500 & 880,500 \\ \hline$1,489,500 & $1,310,500 \\ \hline$2,681,100 & $2,254,614 \\ \hline \hline \end{tabular} AUTOMOTIVE SOLUTIONS INC. AUTOMOTIVE SOLUTIONS INC. Comparative Statement of Stockholders' Equity For the Years Ended December 31, 20Y8 and 20Y7 AUTOMOTIVE SOLUTIONS INC. 14. Return on total assets 8.3% 15. Return on stockholders' equity 14.6 % 16. Return on common stockholders' equity 13.8%