Write the Ellipse $4 x^{2}+16 x+8 y^{2}-64 y=-139$ In the Form $\frac{(x-h)^{2}}{a^{2}}+\frac{(y-k)^{2}}{b^{2}}=1$

Write the ellipse $4 x^{2}+16 x+8 y^{2}-64 y=-139$ in the form $\frac{(x-h)^{2}}{a^{2}}+\frac{(y-k)^{2}}{b^{2}}=1$ .