Austria Zebra, Koizumi and Ou Ou each have some game coins. Ou Zema gave part of his game currency to Koizumi and Ouou, which doubled their game currency; then Koizumi gave part of his game currency to Ao Zema and Ouou, which doubled their current game currency; In the end, Oou gave part of his game currency to Ao Zebra and Koizumi, which doubled their existing game currency each. The final game currency of the three is 24 yuan. How many more game coins did Austria Zebra have than Ou Ou?
奥斑马、小泉和欧欧各有一些游戏币．奥斑马把自己的一部分游戏币给小泉和欧欧，使他们的游戏币各增加1倍；然后小泉把自己的一部分游戏币给奥斑马和欧欧，使得他们现在的游戏币各增加1倍；最后欧欧把自己一部分游戏币给奥斑马和小泉，使他们现有的游戏币各增加1倍．三人最终的游戏币都是24元．奥斑马原来比欧欧多多少枚游戏币．
<gadget id="calculator">24 / 2 / 2</gadget>
<output>6</output>

<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<gadget id="calculator">24 + 24</gadget>
<output>48</output>

<gadget id="calculator">48 / 2</gadget>
<output>24</output>

<gadget id="calculator">12 + 24 + 6</gadget>
<output>42</output>

<gadget id="calculator">42 / 2</gadget>
<output>21</output>

<gadget id="calculator">48 / 2 / 2</gadget>
<output>12</output>

<gadget id="calculator">12 - 12</gadget>
<output>0</output>

<gadget id="calculator">6 + 21 + 0</gadget>
<output>27</output>

<result>27</result>