How long will it take?

A thirty-minute run takes thirty minutes.

You can watch a two-hour movie in two hours and listen to a twenty-minute podcast in twenty minutes.

But how long will it take you to write a two-hundred-word essay?

Somewhere from a few minutes to several hours.

---

It's hard to say because creative work doesn't fit into discrete units of time.

Writing, for instance, requires the right head space and time.

It may take several hours to write a piece in ten minutes.