The following information pertains to Mason Company for Year $2.$

Beginning inventory $112$ units @ $$28$

Units purchased $350$ units @ $$42$

Ending inventory consisted of $40$ units. Mason sold $422$ units at $$84$ each. All purchases and sales were made with cash. Operating expenses amounted to $$3,300.$

Required

a$.$ Compute the gross margin for Mason Company using the following cost flow assumptions: $(1)$ FIFO, $(2)$ LIFO, and $(3)$ weighted average. $($Round cost per unit to $3$ decimal places and final answers to the nearest whole dollar amount.$)$