$\begin{array}{l}\phantom{\phantom{;}2n^{3}+n^{2}-14;}{\phantom{;}3\phantom{;}\phantom{;}}\\\phantom{;}2n^{3}+n^{2}-14\overline{\smash{)}\phantom{;}6n^{3}-4n^{2}\phantom{-;x^n}-7\phantom{;}\phantom{;}}\\\phantom{\phantom{;}2n^{3}+n^{2}-14;}\underline{-6n^{3}-3n^{2}\phantom{-;x^n}+42\phantom{;}\phantom{;}}\\\phantom{-6n^{3}-3n^{2}+42\phantom{;}\phantom{;};}-7n^{2}\phantom{-;x^n}+35\phantom{;}\phantom{;}\\\end{array}$

$3+\frac{-7n^{2}+35}{2n^3+n^2-14}$