Ao Zema has several ballpoint pens, and Ou Ou has several pencils. If Ou Ou uses all the pencils to exchange for the same number of ballpoint pens, he will give Ao Zema 24 yuan; if Ou Ou does not make up the money, he will have to exchange 8 ballpoint pens less. It is known that the price of 2 ballpoint pens is higher than that of 3 pencils The price is 3 yuan more. How many pencils does Ou have?
奥斑马有圆珠笔若干支，欧欧有铅笔若干支．若欧欧用全部的铅笔换回数量同样多的圆珠笔，则要给奥斑马24元；若欧欧不补钱，就要少换8支圆珠笔，已知2支圆珠笔的价钱比3支铅笔的价钱多3元．欧欧有多少支铅笔？
<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">6 - 3</gadget>
<output>3</output>

<gadget id="calculator">3 / 3</gadget>
<output>1</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

<result>12</result>