13A-14. Can someone show me how to do this problem?

Will rate a thumb up for good response thanks so much (PLEASE CIRCLE OR HIGHLIGHT final answer thx)

The president of Hill Enterprises, Terri Hill, projects the firm's aggregate demand requirements over the next 8 months as follows: January February March April 1,500 1,500 1,700 1,900 May June July August 2,300 2,100 1,700 1,400 Her operations manager is considering a new plan, which begins in January with 200 units on hand and ends with zero inventory. Stockout cost of lost sales is $125 per unit. Inventory holding cost is $25 per unit per month. Ignore any idle-time costs. The plan is called plan B. Plan B: Produce at a constant rate of 1,400 units per month, which will meet minimum demands. Then use subcontracting, with additional units at a premium price of $75 per unit. Subcontracting capacity is limited to 900 units per month. Evaluate this plan by computing the costs for January through August. In order to arrive at the costs, first compute the ending inventory and subcontracting units for each month by filling in the table below (enter your responses as whole numbers). Subcontract Units Demand Ending Inventory 200 Production Period Month 0 December 1 January 2 February 3 March 4 April May 1,500 1,500 1,700 1,900 2,300 2,100 1,700 1,400 1,400 1,400 1,400 1,400 1,400 1,400 5 6 June 7 July Plan B: Produce at a constant rate of 1,400 units per month, which will meet minimum demands. Then use subcontracting, with additional units at a premium price of $75 per unit. Subcontracting capacity is limited to 900 units per month. Evaluate this plan by computing the costs for January through August. In order to arrive at the costs, first compute the ending inventory and subcontracting units for each month by filling in the table below (enter your responses as whole numbers). Subcontract Units Demand Ending Inventory 200 Production Period Month 0 December 1 January 2 February 3 March 1,500 4 April May 1,500 1,700 1,900 2,300 2,100 1,400 1,400 1,400 1,400 1,400 1,400 1,400 1,400 5 6 June 7 July August 1,700 1,400 8 The total subcontracting cost = $ (Enter your response as a whole number.) The total inventory carrying cost = $ . (Enter your response as a whole number.) The total cost, excluding normal time labor costs, is = $ (Enter your response as a whole number.)