Eruvin Made Easy part 3: 600,000 is a Big Number

Do you need 600,000 people passing through daily for an area to be considered a reshut harabim? If there are less is an area still considered reshut harabim if it meets the other criteria (e.g. 16 amot wide)?

How do you count 600,000 people? In what size area? Over the course of how much time?