Simplify the given expression. Present your answer using only positive integer exponents.

(15x10y4z43x6y4z2)3=\displaystyle {\left(\frac{{-{15}{x}^{{10}}{y}^{{4}}{z}^{{4}}}}{{{3}{x}^{{6}}{y}^{{4}}{z}^{{2}}}}\right)}^{{3}}=