“Calc-you-later!” Ben receives a slew of job offers, Andy launches a full-scale investigation into his missing computer, and Leslie and April go toe to toe over a dog park project proposed for Lot 48; Jim O’Heir and Greg Levine get into all of it in this week’s episode walkthrough of “Leslie vs. April.” Plus, John Balma stops by to talk about playing Pawnee’s most enthusiastic accountant, Barney Varmn.