code: def dup_exquo_ground(f, c, K):
      """
      Exact quotient by a constant in ``K[x]``.
  
      Examples
      ========
  
      >>> from sympy.polys import ring, QQ
      >>> R, x = ring("x", QQ)
  
      >>> R.dup_exquo_ground(x**2 + 2, QQ(2))
      1/2*x**2 + 1
  
      """
      if not c:
          raise ZeroDivisionError("polynomial division")
      if not f:
          return f
  
      return [K.exquo(cf, c) for cf in f]
  
imports: from sympy.polys.densebasic import dup_slice, dup_LC, dmp_LC, dup_degree, dmp_degree, dup_strip, dmp_strip, dmp_zero_p, dmp_zero, dmp_one_p, dmp_one, dmp_ground, dmp_zeros
  from sympy.polys.polyerrors import ExactQuotientFailed, PolynomialDivisionFailed
label_desc: Use image node_id 15 for calling a global function with example usage: dup_exquo_ground(f, c, K) and returns: unknown, f