“巧算24点”的游戏内容如下：一副牌中抽去大小王剩下52张，任意抽取4张牌（称牌组），用加、减、乘、除（可加括号）把牌面上的数算成24。要求每张牌必须用一次且只能用一次。

　　请编写该游戏，当游戏者无法计算结果时应给出答案。

-Game content is as follows: " A simple calculation of 24 points,"　removing the remainder of the size of the king in a deck of cards 52, a random selection of four cards (called deck), add, subtract, multiply, in addition to the (brackets) license The surface count 24. Each card must be used once and can only be used once. The preparation of the game, when the player is unable to calculate the results should give the answer.