Depreciation Methods

On January 2, 2015, Alvarez Company purchased an electroplating machine to help manufacture a part for one of its key products. The machine cost $218,700 and was estimated to have a useful life of six years or 781,200 platings, after which it could be sold for $23,400.

b. Assume that the machine was purchased on September 1, 2015. Calculate each year's depreciation expense for the period 2015-2021 under each of the following depreciation methods:

2. Double-declining balance. I need extra help with this one. We can't seem to get the right answers. 24,298, 64,794, 43,196, 28,298, 17997, 11,997, 587 are WRONG.

Year Depreciation

2015 ?????

2016 ?????

2017 ????

2018 ????

2019 ?????

2020 ?????

2021 ?????

There are similiar questions to this one online already but the answers they have given are wrong. When I plug the answers in my course says they are wrong so I need a new perspective.