Frisbee Enterprises produces frisbees. Frisbee Enterprises has the following sales projections for the upcoming year:

First quarter budgeted frisbee sales in units20,000

Second quarter budgeted frisbee sales in units35,000

Third quarter budgeted frisbee sales in units22,000

Fourth quarter budgeted frisbee sales in units30,000

Inventory at the beginning of the year was 6,000 frisbees. Frisbee Enterprises wants to have 30% of the next quarter's sales in units on hand at the end of each quarter. How many frisbees should Frisbee Enterprises produce during the first quarter? Show your calculations.