Please help with the attached problem. Note I AM NOT ALLOWED TO USE PV TABLES FOR THIS PROBLEM. It must be done with a financial calculator, or with excel to give the proper answer due to rounding differences with the tables. Please show your work in excel.

Ben Ryatt, professor of languages at a southern university, owns a small office building adjacent to the university campus. He acquired the property 12 years ago at a total cost of $760,000$71,000 for the land and $689,000 for the building. He has just received an offer from a realty company that wants to purchase the property; however, the property has been a good source of income over the years, so Professor Ryatt is unsure whether he should keep it or sell it. His alternatives are: Keep the property. Professor Ryatt's accountant has kept careful records of the income realized from the property over the past 10 years. These records indicate the following annual revenues and expenses: Rental receipts Less building expenses: Utilities Depreciation of building Property taxes and insurance Repairs and maintenance Custodial help and supplies $ 172,000 $ 30,100 19,600 21,200 12,100 45,100 128,100 Net operating income $ 43,900 Professor Ryatt makes a $14,100 mortgage payment each year on the property. The mortgage will be paid off in 10 more years. He has been depreciating the building by the straight-line method, assuming a salvage value of $9,600 for the building, which he still thinks is an appropriate figure. He feels sure that the building can be rented for another 16 years. He also feels sure that 16 years from now the land will be worth 1.52 times what he paid for it. Sell the property. A realty company has offered to purchase the property by paying $209,000 immediately and $30,000 per year for the next 16 years. Control of the property would go to the realty company immediately. To sell the property, Professor Ryatt would need to pay the mortgage off, which could be done by making a lump-sum payment of $91,000. Professor Ryatt requires a 12% rate of return. (Ignore income taxes.) You must use spreadsheet functions or a financial calculator to solve these questions. Required: a. Calculate the net present value of cash flows using total cost approach if he keeps the property. (Negative amount should be indicated by a minus sign. Round final answer to the nearest whole dollar.) Net present value $ b. Calculate the net present value of cash flows using total cost approach if he sells the property. (Negative amount should be indicated by a minus sign. Round final answer to the nearest whole dollar.) Net present value $ c. Would you recommend Professor Ryat to keep the property or to sell? Keep the property Sell the property