" It's hard to imagine what a crowd of one billion people would look like, but if one billion children stood on each other's shoulders, they would reach past the moon! How Big Is 43 Quintillion helps readers understand large numbers by relating them to everyday situations. Simple explanations accompanied by amusing infographics help readers visualize large numbers and get a grip on basic math concepts. A glossary and further reference material are also included at the end of the book. ".