
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 university has 12,000 undergraduates, 1,000 master's students, and 200 doctoral students. Now, using stratified sampling, a sample of size $n$ is to be drawn from all students for a survey. If 20 doctoral students are to be drawn, then $n=$ _______ people.

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