Thank You So Much for Explaining me but I did not get how we get 3 in 2019 here (288000*3-210000)? Can you please explain me. Thanks!

Preferred dividend = 40000*7.2 = $288000

Dividend distribution

Year	Dividend declared and paid	Preferred dividends	Common dividends
2016	360000	288000	360000-288000 = 72000
2017	60000	60000	0
2018	150000	150000	0
2019	900000	(288000*3-210000) = 654000	900000-654000 = 246000

Problem 12-5B Dividend allocation L05 excel Kangaroo Media Inc. has issued and outstanding a total of 40,000 shares of $7.20 preferred shares and 120,000 of common shares. The company began operations and issued both classes of shares on January 1, 2016. Required 1. Calculate the total dividends to be paid to each group of shareholders in each year by completing the following chart. Assume that the preferred shares are cumulative. Dividends Declared and Paid Preferred Dividends Common Dividends Year 2016 2017 2018 2019 $360,000 60,000 150,000 900,000