Mary's Landscaping uses a job order cost system. The following debits (credits) appeared in Work-in-Process Inventory for August:

DescriptionAmountAugust 1Balance$13,800For the monthDirect materials81,100For the monthDirect labor54,900For the monthFactory overhead44,469For the monthTo finished goods(161,300)

Mary's applies overhead to production at a predetermined rate of 81 percent based on direct labor cost. Job 3318, which was started during August and is the only job still in process at the end of August, has been charged direct labor of $6,500.

Required:

What cost amount of direct materials was charged to Job 3318?