
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
Andrew’s grandfather is now sixteen times older than Andrew. Twenty years ago, his grandfather was 45 years older than Andrew at that time. Given that it's currently 2023, how old is Andrew?

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