(5 points) Evan purchased a machine for $360,000 on August 1, 2019. Evan estimates the machine will have a six-year useful life and a salvage value of $60,000. Evan calculates depreciation for a year to the nearest full month. Compute Evan's depreciation for 2020 assuming he uses the following depreciation methods: Sum-of-the-years' digits b. Double-declining balance