$$ \begin{aligned}6 \cdot \frac{\sqrt{3}}{3}\sqrt{6}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{18\sqrt{2}}{3} \xlongequal{ } \\[1 em] & \xlongequal{ }6\sqrt{2}\end{aligned} $$ | |
① | $$ \color{blue}{ 6 \sqrt{3} } \cdot \sqrt{6} = 18 \sqrt{2} $$$$ \color{blue}{ 3 } \cdot 1 = 3 $$ |