I am utterly stumped. I need to know how to get the "preferred dividends" and how to get average common stockholder's equity?

The company's income statements for the Current Year and '1 Year Ago, follow. For Year Ended December 31 Current Year 1 Year Ago Sales $ 694,281 5 54?,312 Cost of goods sold 35 423,463 $ 356,9?8 Other operating expenses 215,202 138,595 Interest expense 11,391 12,569 Income tax expense 9,625 23,2131r Total costs and expenses 659,491 515,491 Net income $ 34,713 3 32,321 Earnings per share $ 2.14 5 1.99 Additional information about the company follows. Common stock market price, December 3-1, Current Year $ 28.06 Common stock market price, December 31, 1 Year Ago 26.30 Annual cash dividends per share in Current Year 6.32 Annual cash dividends per share 1 Year Ago 6.16 For both the current year and one year ago, compute the following ratios: 1. Return on equity. 1 Dividend yield. 3a. Price-earnings ratio on December 31. 3b. Assuming Simon's competitor has a priceearnings ratio of 8, which company has higher market expectations for future growth? Complete this queslion by entering your answers in the tabs below. Required 1 Required 2 Required 3A Required BB Compute the return on equity for each year. Current Year: 1 Year Ago