A water treatment plant treats $25 \mathrm{MLD}$ water with a natural alkalinity of $4.0 \mathrm{mg} / \mathrm{L}$ (as $\mathrm{CaCO}_{3}$ ). It is estimated that, during coagulation of this water, $450 \mathrm{~kg} /$ day of calcium bicarbonate $\left(\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}\right)$ is required based on the alum dosage.
Consider the atomic weights as: $\mathrm{Ca}-40, \mathrm{H}-1, \mathrm{C}-12, \mathrm{O}-16$.
The quantity of pure quick lime, $\mathrm{CaO}$ (in $\mathrm{kg}$ ) required for this process per day is $\_\_\_\_\_\_$. (rounded off to $2$ decimal places).