He is a 'wizard' at math.
a math 'wizard'
(..) She saved us. But she's gone now. - Her name's Eleven. - Like the number? Well, we call her "El" for short. She's basically a wizard. She has superpowers. More like a Yoda. She flipped a van with her mind, and these agents were trying to shoot us... (..)2016 TvShow: Stranger Things Title: Chapter Eight: The Upside Down Season: 1 Episode 8