A random telephone survey of adults $($aged and older$)$ was conducted by Opinion Research Corporation on behalf of CompleteTax, an online tax preparation and e$-$filing service. The survey results showed that of those surveyed planned to file their taxes electronically.

a$.$ Develop a descriptive statistic that can be used to estimate the percentage of all taxpayers who file electronically.

$($to nearest whole number$)$

b$.$ The survey reported that the most frequently used method for preparing the tax return was to hire an accountant or professional tax preparer. If of the people surveyed had their tax return prepared this way, how many people used an accountant or professional tax preparer?

$($to nearest whole number$)$