The manager has requested a report on the inventory system. The senior accountant asks you to do the stock valuation report for March using the weighted average cost method. The information received from the accounting clerk is as follows: On March 1, there were 60 units in inventory valued at $720. On March 10, the company purchased 40 units for $600, and a further 50 units for $18 each on March 18. The company sold 75 units for $1,200 on March 24. The value of closing inventory on March 31 was: