Any given recruiter can be working on filling p positions at once.
Any given position takes d days to be filled by a recruiter.
The hiring goal is to have h new puzzle-writers total, and the goal date to accomplish this is g days from today.
You may assume there are already enough recruiters available; they simply need to be told which position to focus on filling.
How many recruiters are needed to hire the required number of puzzle-writers by the deadline, in terms of p, d, h, and g?