Lawrence-Gabe Storage underwent a restructuring in 2016. The company conducted a thorough internal audit during which the following facts were discovered. The audit occurred during 2016 before any adjusting entries or closing entries are prepared. Additional printers were acquired at the beginning of 2014 and added to the company's office network. The $9,000 cost of the printers was inadvertently recorded as maintenance expense. The printers have five-year useful fives and no material salvage value. This class of equipment is depreciated by the straight-fine method. Three weeks prior to the audit, the company paid $51,000 for storage boxes and recorded the expenditure as office supplies. The error was discovered a week later. On December 31, 2015, inventory was understated by $112,000 due to a mistake in the physical inventory count. The company uses the periodic inventory system. A three-year liability insurance policy was purchased at the beginning of 2015 for $216,000. The full premium was debited to insurance expense at the time. For each error, prepare any journal entry necessary to correct the error as well as any year-end adjusting entry for 2016 related to the situation described. (Ignore income taxes.)