Hello, I have this exercise from my Investment class but I need to know the procedure…

Hello, I have this exercise from my Investment class
but I need to know the procedure of how to reach the results. Could
you help me? Thank you.
Last year ABC company had the following data Net Sales million) # 1,200 Cost of G . Sold 780 Gross Profit Margin na 420 Depreciation 0. Expences 120 Adm. Expences 129 Operating Profit Interest Profit Before Tax Taxes Net Income Cash 200 3000 900 A keceivables inventory Net fixed assets Notes payable Acounts payable Acruals’ 88 8 8 8 220.00 H0.00 20.00 nmon stock par 1.50 Long Term Debt 250.00 Common Stock Aditional paid in cap. Retained earnings – Find total Equity? TOD. 200 00 570