Nanki Corporation purchased equipment at the beginning of 2012 for $650,000. In 2012 and 2013, Nanki depreciated the asset on a straight-line basis with an estimated useful life of 8 years and a $10,000 residual value. In 2014, due to changes in technology, Nanki revised the useful life to a total of six years (four more years) with zero residual value. What depreciation expense would Nanki record for the year 2014 on this equipment?