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Required information

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Hemming Company reported the following current$-$year purchases and sales for its only product.

$\backslash$table$[[\backslash$table$[[$Date$],[$January $1],[$January $10],[$March $14],[$March $15],[$July $30],[$October $5],[$October $26]],$Activities,Units Acquired at Cost,Units Sold at Retail$],[$Beginning inventory,$255$ units,a $$12\mathrm{.}20,=,$$$3,111,,],[$Sales$,,,,,210$ units,@ $$42\mathrm{.}20$