A new business operated at 100% of capacity during its first month and incurred the following costs:

Selling price is $800 per unit. Production costs (2,000 units):
Direct materials	$180,000
Direct labor	240,000
Variable factory overhead	280,000
Fixed factory overhead	100,000	$800,000
Operating expenses:
Variable operating expenses	$130,000
Fixed operating expenses	50,000	180,000

If 400 units are sold during the month, what is the total amount of manufacturing margin reported under Variable Costing?