The June Work in Process account contained the following: Beginning balance -- $19,000 debit Direct materials -- $11,000 debit Direct labor -- $8,000 debit Overhead -- $13,000 debit Transfer to finished goods -- $3,000 credit Overhead is applied at a rate of 125% of direct labor cost. The only job in process at June 30, Job #897, has been charged with direct labor cost of $4,000. What amount of direct materials cost has been charged to Job #897? $____________