
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
Fish farmers often use the "catch-release-recatch" method to estimate the number of fish in a pond. If 100 fish are randomly caught from this pond, marked, and then released back into the pond, and after several days, 200 fish are randomly caught again from the pond, and it is found that 8 of these fish are marked, then the estimated number of fish in the pond is approximately ▲.

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