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Howard Corporation has a job order costing system. The following debits (credits) appear in the firn's work in process account for the month of June: June 1. balance : $12,099 June 30, direct materials : 540,305 June 39, direct labour : $30,609 June 39, overhead applied : $27,000 June 39, to finished goods : ($160,906) Overhead is applied at 90 per cent of direct labour cost. There is only one job still in process at the end of June, and this job has been charged with $2,259 factory overhead. what was the amount of direct materials charged to that job