
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
Four runners start running simultaneously from the same point on a 400-meter circular track and maintain constant speeds of 4.0, 5.0, 6.0, and 7.0 meters per second. Calculate the time in seconds when they meet again at the starting point.

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