
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
Xiaoming's grandfather's age this year, after subtracting 15, dividing by 4, then subtracting 6, and finally multiplying by 10, is exactly 100 years old. How old is Xiaoming's grandfather this year?

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