
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
Each of the symbols $\star$ and $*$ represents a unique operation in the set $\{+, - , \times, \div\}$. Assume $\frac{16 \star 4}{10*2} = 4$. What is the value of $\frac{5 \star 15}{8 * 12}$? Express your answer as a common fraction.

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