An empty flask weighs $76.79 \mathrm{~g}$. The same flask filled with water weighs $195.23 \mathrm{~g}$. Given the density of water to be $0.9970 \mathrm{~g} / \mathrm{mL}$, what is the volume of the flask?

Step 1 ：Calculate the mass of the water by subtracting the weight of the empty flask from the weight of the flask filled with water: \(195.23 \, \text{g} - 76.79 \, \text{g} = 118.44 \, \text{g}\)

Step 2 ：Find the volume of the water in the flask by dividing the mass of the water by the density of water: \(\frac{118.44 \, \text{g}}{0.9970 \, \text{g/mL}} = 118.77 \, \text{mL}\)

Step 3 ：\(\boxed{\text{Therefore, the volume of the flask is approximately 118.77 mL.}}\)