practice exponents

Read the following math poem:

As I was walking into town

I met a ringmaster with five clowns

Each clown had five magicians

Each magician had five bunnies

Each bunny had five fleas

Fleas, bunnies, magicians, clowns

How many were going into town?

For each of the following, answer with an exponential expression rather than a number. So, if I asked how many clowns, you would write