
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
Square corners, 6 units on a side, are removed from a 25 unit by 30 unit rectangular sheet of cardboard. The sides are then folded to form an open box. Find the surface area, in square units, of the interior of the box.

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