The answer for second questions is 532463. Show work please. Trying to figure out how they found this answer

Using the information below, determine the Required Production - Units for December. Production Budget Desired Ending Inventory =15% of the next month's budgeted sales September Ending Inventory =6,000 January Sales =$75,000 Budgeted Sales Add: Desired Ending Inventory Total Needs Less: Beginning Inventory Required Production - units Do not include a comma in your answer Assume each unit of production requires 8 pounds of material (based on the Production Budget - Question \#10) and management wants on hand at the end of each month, 5% of the following month's production. On September 30 , ther are 15,000 pounds of material on hand. Use the Production Budget to determine the number of pounds of material that must be purchased for December