Superior Micro Products uses the weighted-average method in its process costing system. During January, the Delta Assembly Department completed its processing of 25,000 units and transferred them to the next department. The cost of beginning work in process inventory and the costs added during January amounted to $599,780 in total. The ending work in process inventory in January consisted of 3,000 units, which were 80% complete with respect to materials and 60% complete with respect to labor and overhead. The costs per equivalent unit for the month were as follows: Materials Labor Overhead Cost per equivalent unit $ 12.50 $ 3.20 $ 6.40 Required: 1. Compute the equivalent units of materials