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For each of the following cost flow assumptions, calculate cost of goods sold, ending inventory, and gross profit. $(1)$ LIFO. $(2)$ FIFO.

$(3)$ Moving$-$average cost. $($Round average$-$cost per unit to $3$ decimal places, e$.$g$.12\mathrm{.}502$ and final answer to $0$ decimal places, e$.$g$.1,250.)$