Step 1 :\( \frac{10x^{5}z^{2}}{2x^{2}y^{-4}z^{-3}} \cdot \frac{y^{4}z^{3}}{y^{4}z^{3}} \)
Step 2 :\( \frac{10x^{5}y^{4}z^{5}}{2x^{2}} \)
Step 3 :\( 5x^{3}y^{4}z^{5} \)