Calculate ending inventory, cost of goods sold, gross profit under each of the following methods.

$(1)$ LIFO,

$(2)$ FIFO.

$(3)$ Average$-$cost$.($Round per unit cost to $3$ decimal places, e$.$g$.15\mathrm{.}647$ and final answers to $0$ decimal places, e$.$g$.5,125.)$

$\backslash$table$[[,$LIFO,FIFO,AVERAGE$-$COST$],[$The ending inventory,$$,,],[$The cost of goods sold,$$,$$$,$$