
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
When a citizen's monthly income exceeds 800 yuan, the excess part must be taxed according to the law. If the excess part is within 500 yuan (including 500 yuan), the tax rate is 5%; if the excess part is between 500 and 2000 yuan, the tax rate is 10%. If a person needs to pay 80 yuan in taxes for January, then his monthly salary is ______ yuan.

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