
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
A positive integer is thought of. A certain digit is appended to the right of its digital representation. The square of the original number is then subtracted from this new number. The result is 8 times the original number. What number was originally thought of and which digit was appended?

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