The school held a quiz contest, 10 points were awarded for a correct answer, and 6 points were deducted for a wrong answer. Li Long answered 16 questions in total and scored 16 points at the end. How many questions did he answer wrong?
学校举行智力竞赛，答对一题加10分，答错一题扣6分，李龙共抢答16题，最后得分16分，他答错了多少题．
<gadget id="calculator">10 * 16</gadget>
<output>160</output>

<gadget id="calculator">160 - 16</gadget>
<output>144</output>

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

<gadget id="calculator">144 / 16</gadget>
<output>9</output>

<result>9</result>