I have question In Part B in 2016 how we get 41600 can you please explain me?

Problem 12-5A Dividend allocation 105 eXcel Garda World Security Corporation has the following shares, taken from the equity section of its balance sheet dated December 31, 2017. $2,880,000 Preferred shares, $4.48 non-cumulative, 45,000 shares authorized and issued*.. Common shares, 80,000 shares authorized and issued* 1,280,000 *All shares were issued during 2015. During its first three years of operations, Garda World Security Corporation declared and paid total divi- dends as shown in the last column of the following schedule. Required Part A Complete the following schedule by filling in the shaded areas. 1. Calculate the total dividends paid in each year to the preferred and to the common shareholders. Preferred Dividend Common Dividend Total Dividend Year 2015 $ 160,000 2016 400,000 2017 560,000 Total for three years $1,120,000 2. Calculate the dividends paid per share to both the preferred and the common shares in 2017. Part B Repeat the requirements in Part A assuming the preferred shares are cumulative. Analysis Component: Which shares would have a greater market value: cumulative or non-cumulative Explain. Part B Repeat the requirements in Part A assuming the preferred shares are cumulative. Analysis Component: Which shares would have a greater market value: cumulative or non-cumulative Explain. Part B Repeat the requirements in Part A assuming the preferred shares are cumulative. Analysis Component: Which shares would have a greater market value: cumulative or non-cumulative Explain