
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
In an opaque bag, there are several red balls and 4 yellow balls, which are indistinguishable except for their colors. After shaking the bag evenly and randomly drawing a ball from it, recording the color and then putting it back into the bag, through a large number of repeated ball-drawing experiments, it is found that the frequency of drawing a yellow ball is 0.2. Estimate that there are approximately ____ red balls in the box.

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