Class 61 held a knowledge contest, 10 points were awarded for each correct answer, and 6 points were deducted for each wrong answer. Xiaohong answered a total of 10 questions and scored 36 points in the end. How many questions did he get wrong?
六一班开展知识竞赛，答对一题加10分，答错一题扣6分，小红共抢答10题，最后得分36分，他打错了几个题？
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<gadget id="calculator">100 - 36</gadget>
<output>64</output>

<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">64 / 16</gadget>
<output>4</output>

<result>4</result>