
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
To estimate the number of fish in a pond, 100 fish were caught, tagged, and then released back into the pond. After a period of time allowing the tagged fish to mix completely with the rest of the fish population, 300 fish were caught. If 15 of them were tagged, the estimated number of fish in the pond is ____.

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