How many moles of $C{O}_2$ are released when $320\mathrm{.}3g$ of gasoline is burnt $($assuming gasoline is $100\%$ isooctane $[$molar mass $=114\frac{g}{m}ol]$ and that complete combustion takes place$)?$

$($Give your answer to three significant figures.$)$

$2C_8{H}_{18}(l)+25O_2(g)18H_{2}O(g)+16C{O}_2(g)$

mol