In the month of June, a department had 12,000 units in beginning work in process that were 70% complete. During June, 48,000 units were transferred into production from another department. At the end of June there were 6,000 units in ending work in process that were 40% complete. Materials are added at the beginning of the process, while conversion costs are incurred uniformly throughout the process. How many units were transferred out of the process in June?