General Electric sells three types of products: Appliances, Healthcare Equipment, and Aviation Systems. The selling price, variable cost per unit, and contribution margin per unit for each product are as follows:

Product	Selling Price per Unit ($)	Variable Cost per Unit ($)	Contribution Margin per Unit ($)
Appliances	$500	$300
Healthcare Equipment	$1200	$800
Aviation Systems	$2000	$1500

Calculate the missing contribution margin per unit for each product.