Green company has budgeted sales of 23,000 units for June and 25,000 units for July. Green's policy is to maintain its finished goods inventory at 25% of the following month's sales. Accordingly, at the end of May, Green had 5,750 units on hand. How many units must it produce in June in order to support the sales goal and maintain its policy regarding finished goods inventory?

(The answer is 23,500 units but I dont know how they got this answer. Please show all work.)