
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 school randomly selected $100$ students to measure their heights. The tallest student measured $186$ cm and the shortest student measured $154$ cm. A frequency histogram is to be created based on the height data with a class interval of $5$ cm and the lower limit of the first class being $153.5$ cm. The number of classes is ____.

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