Calculate the difference (excess) and calculate goodwill (Bargain purchase gain) please

POPCORN Corporation acquired an 80 % interest in the outstanding stock of SALT Corporation for $520,000 on 1/1/X1. At this time, the stockholders' equity of SALT consisted of $400,000 of capital stock and $50,000 of retained earnings. The following table represents only those assets and liabilities of Salt which had book values different than their fair values at the date of acquisition: Book Value Inventory $ 20,000 Land 30,000 Fair Value $ 15,000 Sold X1 40,000 Still owned 50,000 Remaining life 5 years (40,000) Matures on 12/31/X4 Buildings 10,000 Notes Payable (50,000) Comparative Balance Sheets for POPCORN and SALT AT 12/31/X3 are presented here: Popcorn Salt Assets: Other Assets Inventory Land Buildings-net Investment in Salt Dividends Receivable Advance Receivable from P $318,000 100,000 500,000 1,500,000 $100,000 50,000 100,000 580,000 658,800 24,000 10.000 Total Assets $3,100,800 $840,000 $500,000 $160,000 Liabilities & Equity: Other Liabilities (includes notes pay) Dividends Payable Advance Payable to Salt 30,000 10,000 Capital Stock 2,000,000 400,000 Retained Earnings 590,800 250,000 Total Liabilities and Equity $3,100,800 $840,000