Andrew believes that there is a relationship between sales in $$10,000)$ and advertising expense $(x$ in $$10,000).$ Using sample data, he developed the following regression model: $y$ hat $=31+3\mathrm{.}3x.$ What is the estimated advertising expense $($in dollars$)$ to generate sales of $$22,000,000?$ Round to the nearest whole number.

$709,677$

$72,600\mathrm{.}031$

$708,613$

$6,572,727$

$6,666,657$

$72,910,000$