
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
In 1980, there were 600,000 cases of a certain disease reported in Country X. By 2000, the number of reported cases decreased to 1,000. Calculate the number of cases that would have been reported in 1990 if the number of cases decreased linearly over this period.

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