One product line of Anita's Accessories (AA) is the assembly, testing, and marketing of a USB thumb drive - The Speedster. The parts list for each unit is: 1 standard USB plug, 1 USB mass storage controller, 1 NAND flash memory chip, 1 crystal oscillator, and 1 cover. In the table are the current sales price and variable costs per Speedster. The fixed costs associated with the manufacture and sales of this product are $650,000 per year and Anita's uses a marginal tax-rate of 20% for planning purposes. What is the number of Speedsters required to earn a profit of $140,000 per year after taxes