
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
Xiaojun's toy store received a box of plastic balls, totaling 1000, which are identical except for their colors. Xiaojun stirred the balls in the box and then randomly picked a ball, noted its color, put it back into the box; after stirring again, he randomly picked another ball, noted its color, and put it back into the box; ... After repeating the experiment multiple times, it was found that the frequency of picking a red ball gradually stabilized at 0.2. Based on this, it can be estimated that the number of red balls in the box is approximately ____.

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