Truffle acquired a patent on January 2018 for $780000. It was expected to have a 10 year life and no residual value . Truffle uses straight line amortization for the patent. On December 31, 2021 the expected future cash flow from the patent are $518000 per year for the next six years. The present value of these e cash flow discounted at Truffle market interest rate is $2120000