please show work as to what you multiply to get the answer. like sales= units soldx selling price.

i need to know how to get all calculations.

Selling price $ 128 Units in beginning inventory Units produced Units sold Units in ending inventory 9,150 8,750 400 Variable costs per unit: Direct materials Direct labor Variable manufacturing overhead Variable selling and administrative expense Fixed costs: Fixed manufacturing overhead Fixed selling and administrative expense $ $ $ 22 64 10 14 $137,250 $ 9,200 What is the net operating income foss) for the month under variable costina