\( \frac{6m^{3}n^{2} \cdot 49n^{4} \cdot p^{3}}{35p^{3} \cdot 5m^{5} \cdot 42m} = \frac{6 \cdot 49 \cdot m^{3} \cdot n^{6} \cdot p^{3}}{35 \cdot 5 \cdot 42 \cdot m^{6} \cdot p^{3}} = \frac{294 m^{3} n^{6} p^{3}}{7350 m^{6} p^{3}} \)\( \frac{294 m^{3} n^{6} p^{3}}{7350 m^{6} p^{3}} = \frac{n^{6}}{25 m^{3}} \)Ответ: $$\frac{n^{6}}{25m^{3}}$$