please explain in depth so i can see how to get there.. two different ones

At the beginning of its current fiscal year, Willie Corp.'s balance sheet showed assets of $11,300 and liabilities of $6,900. During the year, liabilities decreased by $800. Net income for the year was $2,550, and net assets at the end of the year were $4,450. There were no changes in paid-in capital during the year. Required: Calculate the dividends, if any, declared during the year. Indicate the financial statement effect. (Enter decreases with a minus sign to indicate a negative financial statement effect.) Assets = $ 11,300 = Stockholders' Equi PIC + RE $ 0 + Liabilities + $ 6,900 + (800) + Beginning: Changes: 0 + Ending: = 1 0 + Retained earnings, December 31, 2019 Decrease in total liabilities during 2019 Gain on the sale of buildings during 2019 Dividends declared and paid in 2019 Proceeds from sale of common stock in 2019 Net income for the year ended December 31, 2019 $378,540 82,440 28,980 8,100 88,920 40,680 Required: From the above data, calculate the retained earnings balance as of December 31, 2018. (Enter decreases with a minus sign to indicate a negative financial statement effect.) Statement of Stockholders' Equity (Partial) | For Year Ended December 31, 2019 Retained earnings, December 31, 2018 Retained earnings, December 31, 2019