Nat.mul: def of Base
Import: import Base
Lines 692-697 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=692&end_line=697

import Base

def Nat.mul(a: Nat, +b: Nat) -> Nat:
  match a:
    case 0n:
      0n
    case 1n+p:
      Nat.add(b, Nat.mul(p, b))

Uses (2):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add