Answer
$840$
Work Step by Step
To evaluate a factorial expression, we multiply the number by each of the preceding integers until we get to $1$. We evaluate the factorial in the numerator and the factorial in the denominator, and then divide: $$\frac{7!}{3!}=\frac{7\times6\times5\times4\times3\times2\times1}{3\times2\times1}=7\times6\times5\times4=840$$
