\[\boxed{\mathbf{3.}\mathbf{327}}\]
\[\textbf{а)}\ 18 + 8^{2} = 18 + 64 = 82\]
\[\textbf{б)}\ 19^{2} - 301 = 361 - 301 = 60\]
\[\textbf{в)}\ (22 - 18)^{2}\ :2^{3} = 4^{2}\ :8 =\]
\[= 16\ :8 = 2\]
\[\textbf{г)}\ (18 - 17)^{8} + 2^{6} = 1^{8} + 64 =\]
\[= 1 + 64 = 65\]