A business uses a job order costing system and applies manufacturing overhead based on direct labour hours at a rate of $2 per direct labour hour. The following data relates to last month's production: DM - $13,000 DL - $54,000 (18,000 hours) Maintenance costs - $7,000 Factory utilities - $1,800 Indirect materials - $2,300 Production supervisor's salary - $13,700 Factory rent - $8,100 Depreciation on machinery - $2,200 Assuming the above data represents all relevant information, what is the overhead under-/over-applied after overhead has been charged to production?