There are 20 judgment questions in an intelligence test, 5 points are awarded for each correct answer, and 3 points are deducted for each wrong answer. After answering 20 questions, Xiaohong only gets 60 points. How many questions does she get wrong?
一次智力测验有20道判断题，每答对一题得5分，答错一题反扣3分，小红答完20题，只得60分，她答错多少题．
<gadget id="calculator">5 * 20</gadget>
<output>100</output>

<gadget id="calculator">100 - 60</gadget>
<output>40</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<result>5</result>