Suppose a pizza parlor has the following production​ costs: ​$3.00 in labor per​ pizza, ​$4.00 in ingredients per​ pizza, ​$0.80 in electricity per​ pizza, ​$1 comma 500 in restaurant rent per​ month, and ​$300 in insurance per month. Assume the pizza parlor produces 5 comma 000 pizzas per month. What is the variable cost of production​ (per month)?