When '$x$' $\times 10^{-2} \mathrm{~mL}$ methanol (molar mass $=32 \mathrm{~g}$' density $=0.792 \mathrm{~g} / \mathrm{cm}^3$) is added to $100 \mathrm{~mL}$. water (density $=1 \mathrm{~g} / \mathrm{cm}^3$), the following diagram is obtained. $x=$$\underline{\hspace{2cm}}$ (nearest integer). [Given : Molal freezing point depression constant of water at $273.15 \mathrm{~K}$ is $1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$]