Northern Pharmaceuticals Ltd$.$ is a Canadian company with a December $31$ year end. It buys a patent on January $1,2018$ from a European pharmaceutical firm for a drug that is supposed to immunize against malaria and begins production and sales immediately. It pays $$26,180$ for the patent. The patent has a legal life of $10$ years. On January $1,2022$the Canadian government orders Northern to permanently take the drug off the market as research show the drug $$causes cancer. Round all calculations to the nearest dollar. Ignore income tax implications.

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Required $1$: What is the amortization expense of the year $2018?$ $

Required $2$: What is the net book value of the asset at the end of $2019?$ $

Required $3$: What gain $($loss$)$ will Northern show in its $2022$ income statement as a result of this? If negative use the minus sign $"-"$ $