The Solar Calculator Company proposes to invest $5 million in a new calculator-making plant. Fixed costs are $2 million per year. A solar calculator costs $5 per unit to manufacture and sells for $20 per unit. If the plant lasts for three years and the cost of capital is 12%, what is the break-even level (i.e., NPV = 0) of annual sales? (Assume that revenues and costs occur at the end of each year. Assume no taxes.) Round to the nearest 1,000 units.