How long will it take money to double if it is invested at $8\%$ compounded quarterly? $8\mathrm{.}7\%$ compounded continuously?

It will take about years at $8\%$ compounded quarterly.

$($Round to two decimal places as needed.$)$

It will take about$\_\_$ years at $8\mathrm{.}7\%$ compounded continuously.

$($Round to two decimal places as needed.$)$