code: def test_expand_mul():
      # part of issue 20597
      e = Mul(2, 3, evaluate=False)
      assert e.expand() == 6
  
      e = Mul(2, 3, 1 / x, evaluate=False)
      assert e.expand() == 6 / x
      e = Mul(2, R(1, 3), evaluate=False)
      assert e.expand() == R(2, 3)
  
imports: from sympy.core.expr import unchanged
  from sympy.core.mul import Mul
  from sympy.core.numbers import I, Rational, pi
  from sympy.core.power import Pow
  from sympy.core.singleton import S
  from sympy.core.symbol import Symbol
  from sympy.functions.combinatorial.factorials import factorial
  from sympy.functions.elementary.exponential import exp, log
  from sympy.functions.elementary.miscellaneous import sqrt
  from sympy.functions.elementary.trigonometric import cos, sin
  from sympy.series.order import O
  from sympy.simplify.radsimp import expand_numer
  from sympy.core.function import expand, expand_multinomial, expand_power_base, expand_log
  from sympy.testing.pytest import raises
  from sympy.core.random import verify_numerically
  from sympy.abc import x, y, z
label_desc: Use image node_id 12 for calling a global function with example usage: test_expand_mul() without return types