That's the total episode count for the series. (gonintendo.com)
However, when it comes to the latter program, Gunsmoke is actually still the longest - running scripted TV show by episode count, because even though it lasted just 20 seasons, those seasons in total contained 635 episodes. (slashfilm.com)
Translated as Astro Boy in the US, the manga was adapted into an animated series with a 193 episode count in 1963 which led to American audiences getting one of their first tastes of anime. (otakunews.com)