An aqueous potassium chloride solution is prepared by dissolving $15\mathrm{.}0g$ of $KCl$ in $435\mathrm{.}0g$ of water. What is the freezing point in $C)$ of the prepared solution? The freezing point depression constant for water is $1\mathrm{.}86\frac{C}{m}.$

Freezing point $=C$