| $$ \begin{aligned}\frac{16^2}{24^7}& \xlongequal{ }\frac{256}{4586471424} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}} \frac{ 256 : \color{orangered}{ 256 } }{ 4586471424 : \color{orangered}{ 256 }} \xlongequal{ } \\[1 em] & \xlongequal{ }\frac{1}{17915904}\end{aligned} $$ | |
| ① | Divide both the top and bottom numbers by $ \color{orangered}{ 256 } $. |