x the numbers in the queue by 2 or 3. Family and friends are queuing next to each other. In the hall they file by solo.
2.5 x 5 x 1,760 = 22,000
I thought of that, but then looking at the queue there are lots of large gaps as well. Actuality i probably somewhere in the middle. They're not really 'solo' in the hall as the queue splits and goes both sides.