
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
Along the two shorter edges of a 20-foot by 30-foot living room, determine the total number of one-by-one square tiles that will be used. Then, calculate the number of three-by-three square tiles needed to cover the remaining floor area after accounting for a 2-by-2 square pillar in the center of the room.

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