Compton Corporation is a wholesale distributor of educational CD-ROMs. The company's records indicate the following:

	This Year			Last Year
Units Sold		250,000			200,000
Sales	$	1,250,000		$	1,000,000
Cost of goods sold		875,000			700,000
Gross margin		375,000			300,000
Selling and administrative expenses		222,000			210,000
Net operating income	$	153,000		$	90,000

What is the company's contribution margin for this year?