$8.$ A stock has had the following year$-$end prices and dividends:

Year Price Dividend

$0$ $$39\mathrm{.}74---$

$139\mathrm{.}19$ $$1\mathrm{.}66$

$239\mathrm{.}971\mathrm{.}22$

$338\mathrm{.}610\mathrm{.}84$

$440\mathrm{.}92\mathrm{.}26$

What is the geometric average return for this stock $($in percent$).$ Answer to two decimals. Carry intermediate calculations to four decimals. $7.$ A stock has had the following year$-$end prices and dividends:

Year Price Dividend

$0$ $$21\mathrm{.}59---$

$120\mathrm{.}01$ $$0\mathrm{.}88$

$222\mathrm{.}450\mathrm{.}01$

$321\mathrm{.}770\mathrm{.}8$

$423\mathrm{.}060\mathrm{.}79$

What is the arithmetic average return for this stock $($in percent$).$ Answer to two decimals. Carry intermediate calculations to four decimals.