An asset for drilling was purchased and placed in service by a petroleum production company. lts cost basis is $60000, and it has an estimated MV of $12000 at the end of an estimated useful life of 14 years. If the expected annual net revenue from this asset is $8000, what is the after-tax cash flow for year 5 (end of year 5). The company's paying income tax at the 15% rate and the SL method is used for depreciation. Please only fill in the number of your calculated result in the blank, e.g., if the result is $100, in "100"; also round to the nearest integer