
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 2011, a telecommunications company launched a series of mobile phone numbers. The first seven digits of the card number were fixed, and the last four digits ranged from "0000" to "9999," totaling 10,000 numbers. Calculate the number of "Golden Rabbit Cards" in this series.

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