Find the nominal annual rate of interest for the following investment.

$\backslash$table$[[$Principal$,$Future Value,Time Due,Frequency of Conversi$],[$$$1780\mathrm{.}00,$$$1861\mathrm{.}02,8$ ysars,semi$-$annually$]]$

The nominal annual rate of interest is $\%$ compounded semi$-$annually. $($Round the final answer to four decimal places as needed. Round all intermediate values to six decimal places as needed.$)$