Turney Company produces and sells automobile batteries, the heavy-duty HD-240. The 2020 sales forecast is as follows.

Quarter HD-240

1 5,400

2 7,140

3 8,460

4 10,390

The January 1, 2020, inventory of HD-240 is 2,160 units. Management desires an ending inventory each quarter equal to 40% of the next quarters sales. Sales in the first quarter of 2021 are expected to be 25% higher than sales in the same quarter in 2020. Prepare quarterly production budgets for each quarter and in total for 2020.