Find $\frac{2}{3} \left(\frac{2}{3}\right)^{2} \frac{2}{3}$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Find $\frac{2}{3} \left(\frac{2}{3}\right)^{2} \frac{2}{3}$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
\frac{16}{81}
Find $\frac{2}{3} \left(\frac{2}{3}\right)^{2} \frac{2}{3}$.
train