| $$ \begin{aligned}2\sqrt{165}\cdot7\sqrt{231}\cdot8\sqrt{35}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}129360\end{aligned} $$ | |
| ① | $$ 112 \sqrt{1334025} = 112 \cdot 1155 = 129360 $$ |