can someone help me please i do not understand this problem?

The Richmond Corporation uses the weighted average method in its process costing system. The company has only a single processing department. The company's ending work in process inventory on August 31 consisted of 20,200 units. The units in the ending work in process inventory were 100% complete with respect to materials and 60% complete with respect to labor and overhead. If the cost per equivalent unit for August was $3.30 for materials and $4.80 for labor and overhead, the total cost assigned to the ending work in process inventory was: Multiple Choice $163,620 O O O O