On March 10, 2022, Blue Company sells equipment that it purchased for $234,240 on August 20, 2015. It was originally estimated that the equipment would have a life of 12 years and a salvage value of $20,496 at the end of that time, and depreciation has been computed on that basis. The company uses the straight-line method of depreciation. Compute the depreciation charge on this equipment for 2015, for 2022, and the total charge for the period from 2016 to 2021, inclusive, under each of the six following assumptions with respect to partial periods.