\[\boxed{\mathbf{85}.}\]
\[1)\ 18^{2}\ :9 - 6^{3}\ :12 =\]
\[= 18 \cdot 18\ :9 - 6 \cdot 36\ :12 =\]
\[= 18 \cdot 2 - 6 \cdot 3 = 36 - 18 = 18\]
\[2)\ \left( 4^{3} - 7^{2} \right) \cdot 36 =\]
\[= (64 - 49) \cdot 36 = 15 \cdot 36 =\]
\[= 540\]