Erin tried to evaluate an expression step by step.
$\qquad\begin{align}
&8 \times 2 \times 5\\\\
\\
=&8 \times (2 \times 5)&\greenD{\text{Step } 1}\\\\
\\
=&16 \times 10&\blueD{\text{Step } 2}\\\\
\\
=&160&\purpleC{\text{Step } 3} \\\\
\end{align}$
**Find Erin's mistake.**
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