Materials costs of $279000 and conversion costs of $105840 were charged to a processing department in the month of September. Materials are added at the beginning of the process; conversion costs are incurred uniformly throughout the process. There were no units in beginning Work in Process, 93000 units were started into production in September, and there were 8000 units in ending Work in Process that were 40% 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 if the weighted average method is used? $178000 O $357000 $291840 $181200