If you used only a keyboard to enter data, how many years would it take to fill up the hard drive in your computer that can store $82$ gigabytes bytes$)$ of data? Assume "normal" eight$-$hour working days, and that one byte is required to store one keyboard character, and that you can type $180$ characters per minute.

$($a$)$ How many seconds are there in $1\mathrm{.}00$ year? $($b$)$ How many nanoseconds are there in $1\mathrm{.}00$ year?

$($c$)$ How many years are there in $1\mathrm{.}00$ second?