1. (8 points) Calculate: $64 \times 46 + 73 \times 37 + 82 \times 28 + 91 \times 19=$
【Solution】Solution: $64 \times 46+73 \times 37+82 \times 28+91 \times 19$
$$
\begin{array}{l}
=2944+2701+2296+1729 \\
=9670
\end{array}
$$

Therefore, the answer is: 9670.