Suppose a pizza parlor has the following production costs: $4.00 in labor per pizza, $3.00 in ingredients per pizza, $0.80 in electricity per pizza, $4,000 in restaurant rent per month, and $300 in insurance per month. Assume the pizza parlor produces 2,000 pizzas per month. What is the variable cost of production (per month)? The variable cost of production is $ (Enter your response as an integer.)