Consider this scaling problem:
A single hydrogen atom at ground state is Å large. This is also represented as picometers or meters.
It's easy to visualize the number 105.8 or even 106. Much harder to picture . If you blew up a hydrogen atom to the size of a (or m) wide grapefruit (an average grapefruit size), and a real grapefruit grew proportionally, approximately how big would the real grapefruit grow to be?