Question - Tribune Manufacturing purchased a machine for $60 000 on 1 January 2015 which is expected to have a 5 year useful life, no residual value, and to produce a total of 20 000 gadgets before it is scrapped. Assuming the Tribune Manufacturing uses the units-of-production method and actual production up to 31 December 2015, (the end of the accounting year) is 5000 gadgets, calculate depreciation expense for 2015.