The following information is taken from Lisa Corporation's financial statements:

		December 31
		2021			2020
Cash		$ 75,600			$ 32,400
Accounts receivable		122,400			96,000
Allowance for doubtful accounts		(5,400)			(3,720)
Inventory		192,000			210,000
Prepaid expenses		9,000			8,160
Land		120,000			72,000
Buildings		352,800			292,800
Accumulated depreciation		(38,400)			(15,600)
Patents		24,000			42,000
		$852,000			$734,040
Accounts payable		$ 108,000			$ 100,800
Accrued liabilities		64,800			75,600
Bonds payable		150,000			72,000
Common stock		120,000			120,000
Retained earningsappropriated		96,000			12,000
Retained earningsunappropriated		331,200			363,240
Treasury stock, at cost		(18,000)			(9,600)
		$852,000			$734,040

		For 2021 Year
Net income		$93,960
Depreciation expense		22,800
Amortization of patents		6,000
Cash dividends declared and paid		42,000
Gain or loss on sale of patents		none