I have some info filled out but i don't know what is wrong. I also would like if you can solve it for me please and thanks

Water Sport Inc. manufactures a small personal water tube used for children learning to swim. Management is now preparing detailed budgets for the third quarter, July through September, and has assembled the following information to assist:

a. The Marketing Department has estimated sales as follows for the remainder of the year (number of water tubes):

July 8,300 October 4,700 August 6,800 November 4,300 September 5,800 December 3, 80050% in the month of sale 45% in the month following sale 5% uncollectibleProduction budget July August September October Budgeted sales (units) 8,300 6,800 5,800 4,700 Add: Desired ending inventory 1,360 1,140 940 860 Total needs 9,660 7,940 6,740 5,560 Less: Beginning inventory (1,660) (1,360) (1, 140) (940) Required production (units) 8,000 6,580 5,600 4,620Direct materials purchases budget July August September Quarter Required production (units) 8,000 Material D236 needed per unit (kgs.) 4 Production needs (kgs.) 32,000 Add: Desired ending inventory (kgs.) 3,696 Total Material D236 needs 32,000 0 3,696 Less: Beginning inventory (kgs.) (6,400) Raw materials to be purchased 25,600 0 3,696 Cost of raw materials to be purchased at $3.00 per kgSchedule of expected cash disbursement July August September Quarter Accounts payable, beginning balance $ 16,800 July purchases: August purchases: September purchases: Total cash disbursements $ 16,800 $ 0 $ 0 $ 0