
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Given: $\left[13.5 \div\left[11+\frac{2 \frac{1}{4}}{1-\square}\right]-1 \div 7\right] \times 1 \frac{1}{6}=1$, find the value of $\square$.


Present the answer in LaTex format: \boxed{Your answer}
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