卓玛在兴丹超市买了一个芭比娃娃，每个芭比娃娃的价格是78.25元，付给售票员100元，应找回多少钱？

古诗阅读欣赏。
                                                                                       鸟鸣涧
                                                                                        唐 王维
                                                                      人闲桂花落，夜静春山空。
                                                                     月出惊山鸟，时鸣春涧中。