
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
After the implementation of the comprehensive two-child policy in China on January 1, 2016, a student organization in a certain middle school organized a survey activity on the willingness to have a second child. It is known that in the town where the middle school is located, there are about 2400 married women under the age of 30, about 3600 women aged 30 to 40, and about 6000 women over the age of 40 who meet the two-child policy criteria. To understand whether there is a significant difference in the willingness to have a second child among women of different age groups, the organization used stratified sampling to draw a sample of size $N$ for the survey. It is known that 60 women aged 30 to 40 were sampled, then $N=$ ______.

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