In its first month of operations, Crane Company made three purchases of merchandise in the following sequence: $(1)240$ units at $$6,(2)340$ units at $$8,$ and $(3)440$ units at $$9.$ Assuming there are $140$ units on hand at the end of the period, compute the cost ending inventory under $($a$)$ the FIFO method and $($b$)$ the LIFO method. Crane uses a periodic inventory system.