\[\boxed{\mathbf{479}.}\]
\[\frac{c^{\frac{3}{2}}}{c^{\frac{1}{2}} + b^{\frac{1}{2}}} - \frac{cb^{\frac{1}{2}}}{b^{\frac{1}{2}} - c^{\frac{1}{2}}} + \frac{2c^{2} - 4cb}{c - b} =\]