On January 1, 2021, the Allegheny Corporation purchased equipment for $130,000. The estimated service life of the equipment is 10 years and the estimated residual value is $9,000. The equipment is expected to produce 300,000 units during its life. Required: Calculate depreciation for 2021 and 2022 using each of the following methods. Exercise 11-2 (Algo) Part 2 2. Double-declining-balance.