Posters.com is a small Internet retailer of high quality posters. The company has $$850,000$ in operating assets and fixed expenses of $$167,000$ per year. With this level of operating assets and fixed expenses the company can support sales of up to $$4,500,000$ per year. The company's contribution margin ratio is $10\%$ which means that an additional dollar of sales results in additional contribution margin, and net operating income, of $10$ cents.

$1)$ Complete the following table showing the relation between sales and return on investment $($ROI$).$