Question - Dividends Per Share

Seventy-Two Inc., a developer of radiology equipment, has stock outstanding as follows: 81,500 shares of cumulative preferred 3% stock, $15 par, and 400,000 shares of $27 par common. During its first four years of operations, the following amounts were distributed as dividends: first year, $55,400; second year, $77,100; third year, $79,900; fourth year, $100,200.

Calculate the dividends per share on each class of stock for each of the four years. If no dividends are paid in a given year, enter "0".

Preferred stock

Common stock

Please explain in math how you received the answer, thank you.