
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
The charging standards of a certain parking lot are as follows: the parking fee for medium-sized cars is 15 yuan per car, and the parking fee for small cars is 8 yuan per car. Now there are 30 medium and small cars parked in the parking lot, and these cars have paid a total parking fee of 324 yuan. Find out how many medium and small cars there are.

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