The marginal costs $($MC$),$ average variable costs $($AVC$),$ and average total costs $($ATC$)$ for a firm are shown in the figure below.

Instructions: Use the tool provided 'Profit$/$Loss$\text{'}$ to illustrate the area of profit $($or loss$)$ that occurs at the profit$-$maximizing level of output, indicated by Pt$.$ A$.$ Drag the points to move or resize.

$($i$)$Pt$.$ AProfit $/$ Loss

Instructions: Enter your answers as a whole number.

The profit$-$maximizing level of output is $q,$ units and profit is $ $$