Firm L had net assets at the end of the year of $390,000. The only items affecting stockholders' equity during the year werc net income of $72,000 and dividends of $42,000. Required: Calculate Firm L's average stockholders' equity and return on equity (ROE). Firm L had net assets at the end of the year of $390,000. The only items affecting stockholders' equity during the year werc net income of $72,000 and dividends of $42,000. Required: Calculate Firm L's average stockholders' equity and return on equity (ROE)