\[\frac{14^{5} \cdot 15^{3}}{6^{3} \cdot 35^{4}} = \frac{7^{5} \cdot 2^{5} \cdot 3^{3} \cdot 5^{3}}{2^{3} \cdot 3^{3} \cdot 5^{4} \cdot 7^{4}} =\]
\[= \frac{7 \cdot 2^{2}}{5} = \frac{28}{5} = 5\frac{3}{5} = 5,6\]