Company A. has budgeted sales in units for the next five months as follows:
January	6,800 units
February	5,400 units
March	7,200 units
April	4,600 units
May	3,800 units
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 December 31 contained 400 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 February is: [1]