Please solve this step by step, explaining each point how to calculate this?

Bridgeport Inc. wants to replace its current equipment with new high-tech equipment. The existing equipment was purchased 5 years ago at a cost of $125,000. At that time, the equipment had an expected life of 10 years, with no expected salvage value. The equipment is being depreciated on a straight-line basis. Currently, the market value of the old equipment is $45,000. The new equipment can be bought for $176,300, including installation. Over its 10-year life, it will reduce operating expenses from $191,400 to $148,000 for the first six years, and from $208,100 to $192,500 for the last four years. Net working capital requirements will also increase by $20,600 at the time of replacement. It is estimated that the company can sell the new equipment for $24,200 at the end of its life. Since the new equipment's cash flows are relatively certain, the project's cost of capital is set at 10%, compared with 15% for an average-risk project. The firm's maximum acceptable payback period is 5 years. X Your answer is incorrect. Calculate the project's net present value. (If the net present value is negative, use either a negative sign preceding the number e.g. -45 or parentheses e.g. (45). For calculation purposes, use 5 decimal places as displayed in the factor table provided, e.g. 1.25124 and final answer to 0 decimal places, e.g. 5,275.) Net present value $ 74361