
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
Xiaopang uses two stopwatches to measure the speed of a train. He finds that the train takes 40 seconds to pass through a 660-meter bridge and takes 10 seconds to pass by him at the same speed. Based on the data provided by Xiaopang, calculate the length of the train in meters.

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