
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

Given positive integers \( a, b, \) and \( c \) such that

\[ 2019 \geqslant 10a \geqslant 100b \geqslant 1000c, \]

determine the number of possible tuples \((a, b, c)\).

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