Use the model to find the product.

\(\begin{aligned}
42\\
\underline{\times\ 4}\\
\end{aligned}\)

\(\begin{aligned}
32\\
\underline{\times\ 2}\\
\end{aligned}\)

\(\begin{aligned}
81\\
\underline{\times\ 5}\\
\end{aligned}\)

\(\begin{aligned}
$63\\
\underline{\times\ \ \ 7}\\
\end{aligned}\)

\(\begin{aligned}
33\\
\underline{\times\ \ \ 2}\\
\end{aligned}\)

\(\begin{aligned}
$25\\
\underline{\times\ \ \ 3}\\
\end{aligned}\)

\(\begin{aligned}
36\\
\underline{\times\ \ \ 8}\\
\end{aligned}\)

\(\begin{aligned}
$94\\
\underline{\times\ \ \ 5}\\
\end{aligned}\)

3 x 82

9 x 41

7 x $23

8 x $54

It will cost $73 per hour to rent a sailboat and $88 per hour to rent a ski boat. How much more will it cost to rent a ski boat than a sailboat for 4 hours?