
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 Paris, there are 2,754,842 residents. Each of them is assigned a unique number from 1 to 2,754,842. How many digits are required to write all these numbers, what is the sum of all these numbers, and what is the sum of all the digits that make up all these numbers?

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