$1.80 \mathrm{~g}$ of solute A was dissolved in $62.5 \mathrm{~cm}^{3}$ of ethanol and freezing point of the solution was found to be $155.1 \mathrm{~K}$. The molar mass of solute A is ________ g $\mathrm{mol}^{-1}$.

[Given : Freezing point of ethanol is 156.0 K.

Density of ethanol is 0.80 g cm^$-$3.

Freezing point depression constant of ethanol is 2.00 K kg mol^$-$1]