Calculate the solubility of Calcium Sulfate ($CaSO_4$, gypsum) in pure water at $25^\circ\text{C}$ if its $K_{sp}$ is $4.93 \times 10^{-5}$. Express the answer in $\text{g/L}$ (Molar mass $= 136.14 \, \text{g/mol}$).