Solve the below using Winters Mathematical Modelling. Dont use CHATGPT or AI. Show me calculations:

Table-2.1 Costs and other information

Item	Cost
Material cost	15/unit
Inventory holding cost	0.3/unit/month
Marginal cost of stockout/backlog	25/unit
Hiring and training cost	1000/worker
Layoff cost	2000/worker
Labour hours required	3 hours/unit
Regular time cost	6/hour
Overtime cost	12/ hour
Cost of subcontracting	38/unit
Starting workforce size	100
Overtime limitation per worker	10 hours/month
Initial inventory	1000 units
End inventory	1000 units
Shift	1
Hours per day	8
Days per month	4 weeks * 5 days
Selling price	40/unit

Table-2.2 Demand Forecast of 2020

Forecast	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2020	5,000	3,000	4,000	3,000	7,000	6,000	8,000	11,000	20,000	20,000	22,000	8,000

The operational data of costs and other information of South West Electronics (SWE) Ltd are provided in table-2.1. Using the demand forecast given in table-2.2, make an aggregate production plan of 2020 for SWE. Please specify how you build your planning model with necessary calculation progress included and conclude your forecasting results.