Martinez Company's relevant range of production is 7,500 units to 12,500 units. When it produces and sells 10,000 units, its average costs per unit are as follows: Average Cost per Unit Direct materials $6.00 Direct labor $3.50 Variable manufacturing overhead $1.50 Fixed manufacturing overhead $4.00 Fixed selling expense $3.00 Fixed administrative expense $2.00 Sales commissions $1.00 Variable administrative expense $0.50 5. If 8,000 units are produced and sold, what is the total amount of variable costs related to the units produced and sold? (Do not round intermediate calculations.) Total variable costs