1. (8 points) The calculation result of the expression $\left(9 \frac{1}{2}+7 \frac{1}{6}+5 \frac{1}{12}+3 \frac{1}{20}+1 \frac{1}{30}\right) \times 12$ is
1. (8 points) The calculation result of the expression $\left(9 \frac{1}{2}+7 \frac{1}{6}+5 \frac{1}{12}+3 \frac{1}{20}+1 \frac{1}{30}\right) \times 12$ is $\qquad$ 310 .

【Solution】Solution: $\left(9 \frac{1}{2}+7 \frac{1}{6}+5 \frac{1}{12}+3 \frac{1}{20}+1 \frac{1}{30}\right) \times 12$
$$
\begin{array}{l}
=\left[(9+7+5+3+1)+\left(\frac{1}{2}+\frac{1}{6}+\frac{1}{12}+\frac{1}{20}+\frac{1}{30}\right)\right] \times 12 \\
=\left[(9+7+5+3+1)+\left(1-\frac{1}{2}+\frac{1}{3}-\frac{1}{4}+\frac{1}{4}-\frac{1}{5}+\frac{1}{5}-\frac{1}{6}\right] \times 12\right. \\
=\left[(9+7+5+3+1)+\left(1-\frac{1}{6}\right)\right] \times 12 \\
=\left(25+\frac{5}{6}\right) \times 12 \\
=25 \times 12+\frac{5}{6} \times 12 \\
=300+10 \\
=310
\end{array}
$$

Therefore, the answer is: 310 .