Выполни деление

1. \(\dfrac{16x^2y^8}{15m^4n^8}\colon \Big(-\dfrac{8x^3y^5}{35m^6n^7}\Big)=\)
   [ \(-\frac {14y^3m^2}{3xn}\) | \(\frac {14y^3m^2}{3xn}\) | \(-\frac {2xy^3m^2n}{3}\) ].
2. \(\dfrac{72a^5b^4}{25y^8}\colon \Big(24a^7b^9\Big)=\)
   [ \(\frac{9}{75a^2b^5y^8}\) | \(\frac{3a^{12}b^{13}}{25y^8}\) | \(\frac{3}{25a^2b^5y^8}\) ].