Answer
$ \frac{40}{3}$
Work Step by Step
We first turn the whole number into fraction form, giving us the following:
$\frac{5}{1} \div \frac{3}{8}$
We never can divide by a fraction. Rather, we must multiply the first fraction by the reciprocal of the second fraction. Because the reciprocal of 3/8 is 8/3, we obtain:
$\frac{5}{1}\times \frac{8}{3} = \frac{40}{3}$.