The Xu Corporation uses a periodic inventory system. The company has a beginning inventory of 460 units at $5 each on January 1. Xu purchases 420 units at $4 each in February and 120 units at $6 each in March. There were no additional purchases or sales during the remainder of the quarter. Xu sells 310 units during the quarter. If Xu uses the weighted average method, what is its cost of goods sold for the first quarter? (Do