Emu Electronics manufacturer located in Box Hill, Victoria. The company's managing director is Shelly Chan, who inherited the company from her father. The company originally repaired radios and other household appliances when it was founded more than 50 years ago. Over the years, the company has expanded, and it is now a reputable manufacturer of various specialty electronic items. Robert McCanless, a recent MBA graduate, has been hired by the company in the finanace department. One of the major revenue-producing items manufactured by Emu Electronics is a smart phone. Emu Electronics currently has one smart phone model on the market and sales have been excellent. The smart phone is a unique item in that it comes in a variety of colours and is pre-programmed to play Jimmy Barnes music. However, as with any electronic item, technology changes rapidly, and the current smart phone has limited features in comparison with newer models. Emu Electronics has spent $1200000 developing a prototype for a new smart phone that has all the features of the existing one, but adds features, such as Wifi tethering. The company has spent a further $250000 for a marketing study to determine the expected sales figures for the new smart phone. Emu Electronics' production manager has produced estimates of the costs associated with manufacture of the new smart phone. Variable costs are estimated at $210 per unit and fixed costs for the operation are expected to run at $5.3 million per year. The estimated sales is 64000 units in Year 1; 106000 units in Year 2; 87000 units in Year 3; 78000 units in Year 4 and 54000 units in the final year. The unit price of the new smart phone will be $515. The necessary manufacturing equipment can be purchased for $38.5 million and will be depreciated for tax purposes over a seven year life (straight line to zero). it is believed the value of the manufactuing equipment in five years time will be $5.8 million. Net working capital for the smart phones will be 20% of sales and will have to be purchased at the end of the year. The cost of the raw materials is reflected in the variable unit cost. Changes in NWC will first occur at the end of Year 1 based on the first year's sales. Emu Electronics has a 30% corporate tax rate and a 12 % required return. Shelly has asked Robert to prepare a report that answers the following questions: 1. What is the payback period of the project? 2. What is the profitability index of the project? 3. What is the IRR of the project? 4. What is the NPV of the project? 5. How sensitive is the NPV to changes in the price of the new smart phone? 6. How sensitive is the NPV to changes in the quantity sold? 7. Should Emu Electronics produce the smart phone? 8. Suppose Emu Electronics loses sales on other models because of the introduction of the new model. How would this affect your analysis?

please advice in more detail regarding the depreciation and the salvage value.