\[\boxed{\mathbf{1}\mathbf{.199}}\]
\[\textbf{а)}\ (2928 - 88)\ :142 =\]
\[= 2840\ :142 = 20\]
\[\textbf{б)}\ (64 + 37) \cdot 91 = 101 \cdot 91 =\]
\[= 9191\]
\[\textbf{в)}\ (8032 - 595)\ :37 = 201\]
\[\textbf{г)}\ 10\ 486\ :(2455 - 2357) =\]
\[= 10\ 486\ :98 = 107\]