Raw Coffee Company common share paid a dividend of RM$3\mathrm{.}35$ per share last year. The company anticipates that its earnings and dividends to grow at a rate of $2\mathrm{.}5\%$ per year for the foreseeable future. Based on the information, calculate;

$-$ The required rate of return if the price per common share is RM$18\mathrm{.}85.$

$-$ The new rate of return if the price per common share is RM$16\mathrm{.}85$ by expecting earning and dividend to grow at $4\%$ annually.