Scalia Systems manufactures rugged handheld computers for use in adverse working environments. Scalia tries to maintain inventory at 40% of the following month's expected unit sales. Scalia began the year with 8,000 units in stock, based on the following unit sales projections prepared by the sales manager: January 20,000 February 25,000 March 18,000 April 22,000 Calculate the scheduled production for March.