Simplify and Write Without Negative Exponents $\frac{2 x^{3} y^{4}-4 x^{2} y^{5}+8 x^{4} y^{3}}{2 x^{2} y^{2}}$

Simplify and write without negative exponents: $\frac{2 x^{3} y^{4}-4 x^{2} y^{5}+8 x^{4} y^{3}}{2 x^{2} y^{2}}$