
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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To reward the students in the interest group, Teacher Zhang spent 92 yuan to buy two types of books: "Intelligence Challenge" and "Math Fun". It is known that each book of "Intelligence Challenge" costs 18 yuan, and each book of "Math Fun" costs 8 yuan. Then, the number of "Math Fun" books bought was ____.

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