Cynthia Littleton Business Editor “That’s like a billion dollars in Indiana.” That quip from Bobby Axelrod is one of the memorable lines in the series finale of “Billions,” the Showtime drama series that wrapped its seven-season run Oct. 27 with the crowd-pleasing episode “Admirals Fund.” Axelrod, played by Damian Lewis, delivers that line as he takes a victory lap after demolishing his latest foil, rival hedge fund manager Mike Prince (Corey Stoll). It’s a reference to that fact that Prince, after an elaborate sting pulled off by Axelrod and the core “Billions” ensemble, is left wiped out but for $100 million he invested with Black-owned banks a few years ago.