\[\frac{6^{4} \cdot 6^{7}}{\left( 6^{4} \right)^{2}} - 16^{2} + 26^{0} = \frac{6^{11}}{6^{8}} - 256 + 1 =\]
\[= 6^{3} - 255 = 216 - 255 = - 39.\]
\[Ответ:1) - 39.\]