In a quiz contest, the teacher asked 33 questions. It was stipulated that one correct answer would get 8 points, and one wrong answer would deduct 3 points. Xiaohong answered all of them, and the result was 0 points.
一次智力竞赛，老师出了33道题，规定答对一道题得8分，答错一道扣3分，小红全部答了，结果得了0分，小红答对了多少道题．
<gadget id="calculator">264 / 11</gadget>
<output>24</output>

<gadget id="calculator">33 - 24</gadget>
<output>9</output>

<result>9</result>