300 was a number.
Algernon Ffinch threatened to give his men three hundred lashes apiece. (TV: The Highlanders)
The Charrl created three hundred of the seven hundred Wonders of the Universe. (PROSE: Birthright)
Lady President Romana released three hundred prisoners from Shada while under the influence of the Carnival Queen. (PROSE: Christmas on a Rational Planet)
Three hundred people attended Rita-Anne Smith's funeral. (PROSE: Rose)
Ice Warriors could live three hundred Earth years. (PROSE: GodEngine)
Pakafroon Wabster lasted at least three hundred years. (COMIC: Interstellar Overdrive)
All three suns of the Planet of Light were eclipsed once every three hundred years. (COMIC: World Without Night)