
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 sales volume of the "Optimization Scheme" series of books in 2009 forms an arithmetic sequence. If the total sales volume for the three high school grades is 2.46 million, calculate the sales volume of the second year of high school.

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