Sunland Company had a beginning inventory on January $1$ of $180$ units of Product $4-18-15$ at a cost of $$20$ per unit. During the year,

purchases were as follows.

Sunland Company uses a periodic inventory system. Sales totaled $990$ units.

Determine the ending inventory and the cost of goods sold under each of the assumed cost flow methods $($FIFO$,$ LIFO, and

average$-$cost$).($Round answers to $0$ decimal places, e$.$g$.1,250.)$