
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
A conference hall is setting up chairs in rows for a meeting. Each row perfectly fits 15 chairs, and currently, there are 180 chairs in total. The hall expects 125 attendees and wants to minimize the number of unoccupied chairs while ensuring all rows are fully occupied. How many chairs should be removed?

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