Q 21-30 are based on the following information The Chemplast Company manufactures and sells a range of high quality industrial containers. It has established a reputation in the industry for qality and timely delivery of its containers. The company is considering closing the container department and outsourcing the production of its containers to another company, Containers Inc, who has offered to supply the required number of containers at $1,200,000 each year for the next 5 years. The annual expenses of manufacturing containers are as follows: 700,000 400,000 100,000 50,000 100,000 70,000 Manager Smith's salar Depreciation of machinery Allocation of general administrative expenses 320,000 Total annual expenses. 1,420,000 Materials for the next year are already in inventory and will have to be discarded if the outsourcing contract with Containers Inc is agreed upon. Material for each year is purchased at the end of the previous year. Even if this department is closed, another managerial position was becoming available to which Smith would move without loss of pay or prospects.The company was paying $80,000 per year in rent for a warehouse for other corporate purposes. If the container department is closed, Chemplast would have all the space it needs and not need to rent the said warehouse. Currently, the company spends $280,000 annually on general administrative expenses that it allocates equally to each of its 4 departments. The company does not expect any savings in its administrative expenses from closing down the container department. The machine used in the production process was purchased 4 years ago for $800,000. Depreciation for book and tax purposes is straight line over 8 years. The book value of the machine is $400,000, and is expected to last for 5 more years. If the department is closed, the machine can be sold today for $200,000. Assume that the company has a 5 year horizon for this project, that the company's cost of capital is 10%, and that its tax rate is 40%. This is the answer key to the following problem, Can someone PLEASE show me the calculations/where they get each of the numbers from