
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 teacher asked Xiao Ma to help calculate the class average score for the math exam. Xiao Ma mistakenly recorded his score of 91 as 19, resulting in an average score of 87. After discovering the mistake, the teacher recalculated and found the correct average score to be 90. How many students are in the class?

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