
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
Calculate the following expression: 
\[
\left\lfloor \frac{2023! - 2020!}{2022! + 2021!} \right\rfloor.
\]
(Note that $\lfloor x \rfloor$ denotes the greatest integer less than or equal to $x$).

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