\[\left( \frac{x}{y} \right)^{3}\]
\[x = - 6;\ y = 1,5:\]
\[\left( \frac{- 6}{1,5} \right)^{3} = ( - 4)^{3} = - 4^{3} = - 64.\]
\[x = 0;\ \ y = - 23:\]
\[\left( \frac{0}{- 23} \right)^{3} = 0^{3} = 0.\]