Cowboy Grub has provided the following production and average cost data for two levels of monthly production volume. The Restaurant produces a single product Good Ole Big Monty. Production volume ........ 5,000 units Direct materials............ $52.50 per unit Direct Labor ............... $43.50 per unit Manufacturing overhead.. $76.00 per unit 8,000 units $52.50 per unit $43.50 per unit $61.00 per unit The best estimate of the total monthly fixed manufacturing cost is