On July 1, 2014, XYZ Containers purchased equipment that has an expected capacity of 300,000 units and no residual value. The machine cost $ 750,000 and is to be depreciated using the units-of-production method. During the six months of 2014, 75,000 units of product were produced. At the beginning of 2015, engineers estimated that the machine can realistically be used to produce only another 187,500 units.During 2015, 125,000 units were produced. What amount would XYZ report as depreciation for 2015?

I dont understand how to solve this practice problem from the book can you please help?