Aaron Corporation, which has only one product, has provided the following data concerning its most recent month of operations: Selling price $ 97 Units in beginning inventory Units produced Units sold Units in ending inventory 4,600 3,770 830 Variable costs per unit: $ 22 37 Direct materials Direct labor Variable manufacturing overhead Variable selling and administrative expense Fixed costs: Fixed manufacturing overhead Fixed selling and administrative expense $54,900 $ 3,200 The total contribution margin for the month under variable costing is