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How much is 80?

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 It's about nine-tenths the number of Keys on a Piano. In other words, 80 is 0.910 times the count of Keys on a Piano, and the count of Keys on a Piano is 1.10 times that amount. (Moden layout; A0 to C7) It's about one-and-one-tenth times the number of Submarines in the US Navy. In other words, the count of Submarines in the US Navy is 0.910 times 80. (a.k.a. Subs) (includes all types, all classes) (2015 figures) The United States Navy maintains a fleet of 72 active submarines. A typical submarine goes to sea with a crew of about 140. It's about three-fourths the number of Wolves in Yellowstone National Park. In other words, 80 is 0.7690 times the count of Wolves in Yellowstone National Park, and the count of Wolves in Yellowstone National Park is 1.30 times that amount. (a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area) As of the 2014 population count, there were 104 wolves living in Yellowstone National Park, in twelve packs. All of the wolves now living in the Park are thought to have descended from the 66 wolves (re)introduced into the Park in 1995-96. It's about two-thirds the number of Elements on the Periodic Table. In other words, 80 is 0.6780 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 1.470 times that amount. (a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016) From element number one, hydrogen, to element one-hundred eighteen, ununoctium, there are 118 confirmed elements on the Periodic Table. Ninety-four of the elements exist in nature, and the remaining twenty-four have only been synthesized in labs (not having occurred naturally in the time since scientists have begun researching them) It's about one-and-a-half times the number of Countries in Africa. In other words, the count of Countries in Africa is 0.670 times 80. (2016 figures) (sovereign states recognized by the UN only) It's about three-fifths the number of Union Stations in the United States. In other words, 80 is 0.5930 times the count of Union Stations in the United States, and the count of Union Stations in the United States is 1.690 times that amount. (a.k.a. Union Terminal; a.k.a. Joint Station; a.k.a. Union Depot) (2016 figures) It's about one-and-seven-tenths times the number of Teeth in a Great White Shark's Mouth. In other words, the count of Teeth in a Great White Shark's Mouth is 0.590 times 80. (Carcharodon carcharias) (average; including developing rows)