divide list ['a', 'b', 'c', '1', '2', '3'] evenly into three separate list

def divide_list(l):
  return l[:int(len(l)/3)], l[int(len(l)/3):int(len(l)/3)*2], l[int(len(l)/3)*2:]

divide_list(['a', 'b', 'c', '1', '2', '3'])