The risk$-$free return is $4\mathrm{.}8\%$ and the market risk premium is $8\mathrm{.}2\%.$ What is the expected return for the following portfolio? $($State your answer in percent with two decimal places.$)$

Stock Beta Investment

AAA $3\mathrm{.}3$$$600,000$

BBB $2\mathrm{.}2$$$1,200,000$

$CCC2\mathrm{.}0$$$2,200,000$

DDD $0\mathrm{.}9$$$1,800,000$

$6\mathrm{.}24\%$

$15\mathrm{.}04\%$

$11\mathrm{.}04\%$

$19\mathrm{.}84\%$

$18\mathrm{.}34\%$