
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
Seven people each own seven cats; each cat eats seven mice, each mouse eats seven stalks of barley, and from each stalk of barley, seven measures of grain can be produced. What are the numbers in this series, and what is their sum?

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