Aaron Corporation, which has only one product, has provided the following data concerning its most recent month of operations: 5 102 selling price Units in beginning inventory Units produced Units sold Unita in ending inventory 0 4,900 4,260 640 $ 5 Variable conto per unit: Direct material Direct labor Variable manufacturing overhead Variable selling and administrative expense Fixed costs Fixed manufacturing overhead Fixed selling and administrative expense 20 41 5 6 $ $64,200 $ 2,900 The total contribution margin for the month under variable costing is