Calculate the financial values from the balance sheet below. Your answer should be numerical. $($Each correct answer is worth $2$ points$)$

$\backslash$table$[[\backslash$table$[[$Total Revenue,$],[,$Cost of Good Sold$]],\backslash$table$[[30,000],[20,000]]],[$Gross Profit,$\backslash$table$[[($A$)],[($B$)]]],[\backslash$table$[[$Operation Profit$],[$Non$-$operation Profit$]],\backslash$table$[[7,000],[1,000]]],[\frac{\text{N}\text{o}\text{n}-\text{o}\text{p}\text{e}\text{r}\text{a}\text{t}\text{i}\text{o}\text{n}\text{E}\text{x}\text{p}\text{e}\text{n}\text{s}\text{e}}{\text{P}\text{r}\text{o}\text{f}\text{i}\text{t}\text{b}\text{e}\text{f}\text{o}\text{r}\text{e}\text{T}\text{A}\text{X}},\frac{(C)}{4,000}$