A machine costing $210,000 has an estimated residual value of $14,000 and an estimated service life of ten years. What is the annual depreciation for each of the first two full years under the following methods? 1. Double declining-balance. 2. Units of production. Lifetime production is estimated at 156,800 units; the machine produced 16,000 units in year one and 21,000 in year two. 3. Straight-line depreciation method.