​It’s Five​ O’Clock Somewhere, LLC manufactures beverage containers. The company is anxious to produce and sell a new beverage container designed to keep beverages cool for up to 2 hours. The container will sell for​ $3 each. Enough capacity exists in the​ company’s plant to produce​ 16,000 of the new containers each month. Variable costs to manufacture and sell one of the containers would be​ $1.25, and fixed costs associated with the container would total​ $14,400 per month. The​ company’s Marketing Department predicts that if demand for the new container exceeds the​ 16,000 containers that the company is able to produce in its current facility, additional manufacturing space can be rented from another company at a fixed cost of​ $1,000 per month. Variable costs in the rented facility would total​ $1.40 per​ unit, due to somewhat less efficient operations than in the​ company’s current facility. How many of the new beverage containers must be sold each month to make a monthly profit of?