
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
At the start of a 5-hour trip, the odometer in Jill's car indicates that her car had already been driven \( 13831 \, \text{km} \). The integer 13831 is a palindrome, because it is the same when read forwards or backwards. At the end of the 5-hour trip, the odometer reading was another palindrome. What is Jill's greatest possible average speed in \(\text{km/h}\), given that she never drove faster than \( 80 \, \text{km/h} \)?

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