
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
The A, B, and C batches of a certain brand of milk powder total 240 units. To investigate the quality of the milk powder, it is planned to use stratified sampling to draw a sample of size 60. Given that the quantities of milk powder in batches A, B, and C form an arithmetic sequence, the number of units that should be drawn from batch B is ____ units.

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