Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March.

$4.$ Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include $80$ units from beginning inventory, $340$ units from the March $5$ purchase, $40$ units from the March $18$ purchase, and $120$ units from the March $25$ purchase.

Note: Round weighted average cost per unit to $2$ decimal places.

$\backslash$table$[[$Gross Margin,FIFO,LIFO,Weighted Average,Specific ID$],[$Sales$,$$$,50,900,$$$,50,900,$$$,50,900,$$$,50,900],[$Less: Cost of goods sold,,$31,800,,32,920,,,,],[$Gross profit,$$,19,100,$$$,717,980,,,\frac{?}{\text{b}\text{a}\text{r}}($$$),\frac{?}{\text{b}\text{a}\text{r}}(18,360)$

PLEASE HELP ME W THE LAST $3$