Please provide a specific explanation and equation formula on each step

ABC Corp. is considering a new assembly line to replace the existing assembly line. The assembly line would require to use a parcel of land that cost $630,000 three years ago. But the land can be sold for $900,000 today and is expected to be sold for $1,200,000 six years from now. The company conducted a marketing survey for the feasible impact of the new assembly line, if replaced, on the companys cash flow six months ago, costing $30,000.

The existing assembly line was installed 3 years ago at a cost of $90,000; it was being depreciated under the straight-line method. The existing assembly line is expected to have a usable life of 6 more years. The new assembly line costs $150,000; requires $18,000 in installation costs and $6,000 in training fees; it has a 6-year usable life and would be depreciated under the straight-line method.

The new assembly line will increase output and thereby raises sales by $25,000 per year and will reduce production expenses by $5,000 per year. The existing assembly line can currently be sold for $45,000. To support the increased business resulting from installation of the new assembly line, the firm will also need $25,000 in initial net working capital for the project. The net working capital will be recovered when the project ends.

At the end of 6 years, the existing assembly line is expected to have a market value of $5,000; the new assembly line would be sold to net $20,000 before taxes. Finally, to install the new assembly line, the firm would have to borrow $80,000 at 10% interest from its local bank, resulting in additional interest payments of $8,000 per year. The firm pays 20% taxes and its shareholders require 6% return.

1. What is the initial outlay associated with this project?

2. What is the operating cash flow per year?

3. What is the terminal cash flow?

4. Find NPV for this project. Should this machine be replaced? Explain why.