
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
A certain high school has three grades. There are 600 students in the first grade. If stratified sampling is used to draw a sample of 45 people, and it is known that 20 people are drawn from the second grade and 10 people from the third grade, then the total number of students in this high school is __________.

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