how many direct labor hours were worked on job 3600-4

At the beginning of the year, Whitewater Company budgeted overhead of $500,000 as well as 25,000 direct labor hours. This company applies overhead based on direct labor hours, During the year Job 3600-4 was completed with the following formation: $3,000 Direct materials Direct labor $5,550 By the end of the year,21,200 direct labor hours had actually been worked and Whitewater incurred the following actual overhead costs for the year. Direct labor rate $15 per direct labor hour $ 48,400 Depreciation on Factory building Factory Insurance Indirect Factory labor Factory Utilities Other Factory Overhead REQUIRED: $ 28,200 $ 180,500 $ 89,725 $ 75,475 How many direct labor hours were worked on Job 3600-4? (Enter a number with NO decimal places without commes or dollar signs)