It's about eight times the number of Wolves in Yellowstone National Park.
In other words, 820 is 7.88 times the count of Wolves in Yellowstone National Park, and the count of Wolves in Yellowstone National Park is 0.127 times that amount.(a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area)
It's about nine-and-a-half times the number of Keys on a Piano.
In other words, the count of Keys on a Piano is 0.11 times 820.(Moden layout; A0 to C7)
It's about one-tenth the number of Blue Whales in the World.
In other words, the count of Blue Whales in the World is 10 times 820.(Balaenoptera musculus) (2002 estimates)
It's about eleven times the number of Submarines in the US Navy.
In other words, the count of Submarines in the US Navy is 0.091 times 820.(a.k.a. Subs) (includes all types, all classes) (2015 figures)
It's about one-tenth the number of Benches in Central Park.
In other words, the count of Benches in Central Park is 10 times 820.(Manhattan, New York City, New York)
Central Park — the 843-acre park located in the heart of New York City — contains about 9,000 park benches. The park is one of the most famous in the world and entertains over 35 million visitors each year.
It's about one-tenth the number of Written Characters in the Chinese Language.
In other words, 820 is 0.08767 times the count of Written Characters in the Chinese Language, and the count of Written Characters in the Chinese Language is 11.41 times that amount.(zhōngwén, 中文) (Hànzì, 汉字/漢字; Shuowen Jiezi count; distinct characters)
According to the Han Dynasty dictionary, Shuowen Jiezi (說文解字), there are 9,353 distinct Han characters used to depict the Chinese language. Fluency in written Chinese requires mastery of 4,000 - 5,000 of these characters.
It's about fifteen times the number of Countries in Africa.
In other words, the count of Countries in Africa is 0.067 times 820.(2016 figures) (sovereign states recognized by the UN only)
The continent of Africa includes 54 sovereign countries recognized by the United Nations as of 2016. It is the second-most populous continent in the world, with 1.1 billion inhabitants.