The enzymatic hydrolization of fish oil extracted from crude eel oil has been carried out using

lipase L$.$ One of the desired products is docosahexaenic acid, which is used as a medicine in

China. For $40mg$ of enzyme the Michaelis constant is $6\mathrm{.}2{10}^{-2}m\frac{l}{m}l$ and $V_{\text{m}\text{a}\text{x}}$ is $5\mathrm{.}6$

$mo\frac{l}{m}l.$ Calculate the time necessary to reduce the concentration of fish oil from $1\mathrm{.}4$ to $0\mathrm{.}2$

vol. $\%.$