Harris Fabrics computes its plantwide predetermined overhead rate annually on the basis of direct labor-hours. At the beginning of the year, it estimated that 27,000 direct labor-hours would be required for the periods estimated level of production. The company also estimated $579,000 of fixed manufacturing overhead cost for the coming period and variable manufacturing overhead of $4.00 per direct labor-hour. Harriss actual manufacturing overhead cost for the year was $747,847 and its actual total direct labor was 27,500 hours.