
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
The formula for calculating the Richter magnitude $M$ is: $M = \lg A - \lg A_0$, where $A$ is the maximum amplitude recorded by the seismograph for the earthquake, and $A_0$ is the amplitude of the corresponding standard earthquake. Suppose in an earthquake, the maximum amplitude recorded by the seismograph is 1000, and the amplitude of the standard earthquake at this time is 0.001, then the magnitude of this earthquake is ____ times.

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