Выполни деление

1. \(\dfrac{17x^3y^5}{12a^4b^2} \colon \Big(-\dfrac{51xy^4}{28a^2b^3}\Big)=\)
   [ \(-\frac {7x^2yb}{9a^2}\) | \(-\frac {17x^4y^9}12{a^6b^5}\) | \(-\frac {7x^4yb}{9a^2}\) ].
2. \(\dfrac{56a^5b^3}{11c^2}\colon \Big(14a^8b^2\Big)=\)
   [ \(\frac {4b}{11c^2a^3}\) | \(\frac {4a^3b}{11c^2}\) | \(\frac {8b}{22c^2a^3}\) ].