
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]


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The high school section of a certain school has three grades. The senior grade (Grade 3) has 1000 students. A stratified sampling method is used to draw a sample of 180 students. It is known that 70 students were drawn from the freshman grade (Grade 1) and 60 students from the sophomore grade (Grade 2). The total number of students across all three grades in the high school section is ______.

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