Preston Manufacturing is working on two housing projects. Overhead is applied on the basis of direct labor hours. At the beginning of the year, the company estimated that overhead would be $64,000 and 10,000 direct labor hours would be worked. Both projects were started and completed in the current accounting period. The following transactions were completed during the period: (a) Used $10,000 of direct material on Project I and $6,800 of direct material on Project II. (b) Labor costs for the two jobs amounted to the following: Project 1, $24,000 (2,000 hours); Project II, $44,000 (6,000 hours). (c) Project II was sold during the period for $120,000. The amount of estimated overhead applied to Work in Process Inventory for the period equals: (Do not round intermediate calculation.)