Samuel just purchased one IBM stock share for $16$ dollars. IBM stock price has a $20\%$ chance to be $5,$ a $30\%$ chance to be $25,$ and a $50\%$ chance to be $6$ next year. What is Samuel's expected return $($report the return as a decimal number with four decimal places such as $0\mathrm{.}0665)$ from holding the IBM share for one year?