a$)$ Calculate the Cost of Sales.

Do not enter dollar signs or commas in the input boxes.

Do not use negative signs.

$\backslash$table$[[$Inventory$,$ November $1,2020,,],[$Purchases$,$$$102270,],[$Purchase Returns and Allowances,,$],[$Net Purchases,$$91840,],[$Freight$-$In$,$$$1190,$$$47730$