(209 *209* 209 * 3) / 7000000000 = 0.00391256957
Each "person" would have just under 4/1000 of a cubic foot of space.
(numbers are approximate. World population estimates are about 7 billion.)
OK, here's the BEE content. If someone would like to provide an estimate of the world honeybee population, we could see whether all those bees will fit into one cubic acre.