Bates Company currently produces and sells 17,000 units of a product that has a contribution margin of $6 per unit. The company sells the product for a sales price of $20 per unit. Fixed costs are $24,600. The company has recently invested in new technology and expects the variable cost per unit to fall to $12 per unit. The investment is expected to increase fixed costs by $18,600. After the new investment is made, how many units must be sold to breakeven?