
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
What is the value of $\frac{2015^4 - 3 \cdot 2015^3 \cdot 2016 + 3 \cdot 2015^2 \cdot 2016^2 - 2016^4 + 2015}{2015 \cdot 2016}$?

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