These are selected 2017 transactions for Cheyenne Corporation: Jan. 1 Purchased a copyright for $235,550. The copyright has a useful life of 7 years and a remaining legal life of 32 years. Mar. 1 Purchased a patent with an estimated useful life of 5 years and a legal life of 22 years for $113,700. Sept. 1 Purchased a small company and recorded goodwill of $151,900. Its useful life is indefinite. Indicate the amount of amortization expense on December 31, 2017, for Cheyenne Corporation. Amortization expense