Number of people, blended average hourly cost per person, and meeting length in minutes—rough total cost.
The page uses cost = headcount × hourly rate × (minutes ÷ 60). Headcount and meeting length (minutes) must be positive; hourly rate must be non‑negative. The second line shows person‑hours (headcount × minutes ÷ 60).
Calendar overhead, benefits, facilities, and travel are not included—only headcount × rate × minutes.