Consider the following data for Magnimus Corporation. Sales in units July 3,700 August September 4,600 4,800 Sales revenue $462,500 $575,000 $600,000 Direct materials 72,890 90,620 94,560 Direct labour 84,915 105,570 110,160 Manufacturing overhead 65,680 71,980 73,380 Sales commission 25,900 32,200 33,600 Other selling expenses 45,920 47,720 48,120 Administrative expenses 36,050 36,050 36,050 Required: If 3,700 units are sold, what is the total contribution margin? (Do not round intermediate calculations.) Total contribution margin