| $$ \begin{aligned}0.0002+\frac{4.0E-5}{0.025i}& \xlongequal{ }0.0002+\frac{4.0E-5}{0i} \xlongequal{ } \\[1 em] & \xlongequal{ }0.0002+0 \xlongequal{ } \\[1 em] & \xlongequal{ } \cancel{0} \cancel{0} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}0\end{aligned} $$ | |
| ① | Combine like terms: $$ \, \color{blue}{ \cancel{0}} \, \, \color{blue}{ \cancel{0}} \, = \color{blue}{0} $$ |