The risk$-$free return is $4\mathrm{.}3\%$ and the market risk premium is $8\mathrm{.}3\%.$ What is the expected return for the following portfolio? $($State your answer in percent with two decimal places.$)$

Stock Beta Investment

AAA $3\mathrm{.}6$ $$600,000$

BBB $2\mathrm{.}2$ $$1,100,000$

CCC $1\mathrm{.}9$ $$2,500,000$

DDD $1\mathrm{.}2$ $$1,400,000$