1. The problem involves understanding the production budget and payments over several months. 2. The production cost per unit is given as $P=30$. 3. The production units for each month are: June: 3100, July: 3200, August: 3500, September: 3000, October: 4000, November: 4200, December: 4000. 4. To find the required production cost for each month, multiply units by cost per unit: $$\text{Cost} = \text{Units} \times P = \text{Units} \times 30$$ 5. Calculate for June: $$3100 \times 30 = 93000$$ 6. The table shows production costs and payments, but some values differ from the direct multiplication, indicating additional factors or adjustments. 7. Payments from current month sales, previous month sales, and two months prior sales are listed, but without explicit formulas or instructions, we cannot compute exact values. 8. The repurchase of common stock is mentioned but lacks numerical data for calculation. 9. Without further instructions or specific questions, the main calculation is the production cost per month using the formula above. 10. Final answer for June production cost is $93000$; similarly, other months can be calculated by multiplying units by 30.