Hurst Company manufactures and sells a single product. Price and cost data for this product are as follows:

Selling price / unit $ 40.00

Variable manufacturing costs / unit 20.00

Variable selling expenses / unit 6.00

Fixed manufacturing overhead $ 208,000 per year

Fixed administrative expenses 240,000 per year

Required:

How many units need to be sold to earn an annual net operating income equal to 15% of sales?