A municipal bond you are considering as an investment currently pays a yield of $6\mathrm{.}83$ percent.

a$.$ Calculate the tax equivalent yield if your marginal tax rate is $28$ percent.

b$.$ Calculate the tax equivalent yield if your marginal tax rate is $21$ percent.

$($For all requirements, round your percentage answers to $3$ decimal places. $($e$.$g$.,32\mathrm{.}161))$

Answer is complete but not entirely correct.

$\backslash$table$[[,],[$a$.,$Tax equivalent yield,$9\mathrm{.}860ox,\%$