Amelia Corporation has budgeted sales in units for the next five months as follows: June 4,500 units July 7,100units August 5,300units September 6,700 units October 3,700 units Past experience has shown that the ending inventory for each month must be equal to 10% of the next month's sales in units. The inventory on May 31 contained 450 units. The company needs to prepare a production budget for the second quarter of the year. The total number of units to be produced in July is