Can you tell me how to get this answer, I got it right because it was online but no clue how they got it.

Absorption-Costing Income Statement During the most recent year, Osterman Company had the following data: Units in beginning inventory Units produced 10,000 Units sold ($47 per unit) 9,300 Variable costs per unit: Direct materials $9 Direct labor $6 Variable overhead $4 Fixed costs: Fixed overhead per unit produced $5 Fixed selling and administrative $138,000 Required: 1. Calculate the cost of goods sold under absorption costing. $ 223,200