Materials costs of $900000 and conversion costs of $1365000 were charged to a processing department in the month of September. Materials are added at the beginning of the process, while conversion costs are incurred uniformly throughout the process. There were no units in beginning work in process, 15000 units were started into production in September, and there were 4000 unitsin ending work in process that were 50% complete at the end of September What was the total amount of manufacturing costs assigned to those units that were completed and transferred out of the process in September? $1815000 $2145000 $2475000 $1661000