A spice merchant divided 5/6 of a pound of ground cinnamon into 5 equal packages. He then sold the ground cinnamon to restaurants and bakeries. What was the weight of ground cinnamon in each package?

To find the weight of ground cinnamon in each package, we start with the total weight of cinnamon the spice merchant has, which is \( \frac{5}{6} \) of a pound. He divided this amount into 5 equal packages.

To calculate the weight of cinnamon in each package, we divide the total weight by the number of packages:

\[ \text{Weight of each package} = \frac{5/6}{5} \]

This division can be rewritten as multiplying by the reciprocal:

\[ \text{Weight of each package} = \frac{5}{6} \times \frac{1}{5} \]

Simplifying this:

\[ \text{Weight of each package} = \frac{5 \times 1}{6 \times 5} = \frac{5}{30} \]

Now, simplifying \( \frac{5}{30} \):

\[ \frac{5}{30} = \frac{1}{6} \]

Thus, the weight of ground cinnamon in each package is

\[ \boxed{\frac{1}{6}} \text{ pounds} \]