
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
Given that a batch of 800 balls contains 40 yellow balls, determine the number of yellow balls that should be drawn when sampling 60 balls by using stratified sampling by color.

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