Computing $\frac{(16!)!}{16!}$

Question

I am having problems with this one. Can someone help me?

\begin{align} \frac{(16!)!}{16!} \end{align}

Answer 1

Let $n=16!$. What is $n!/n$?

Answer 2

Notice that $\displaystyle \frac{x!}{x}=(x-1)!$

Therefore, we have $\displaystyle \frac{(16!)!}{16!}=(16!-1)!$