The school holds a knowledge contest, and stipulates that in the quick answer session, 10 points will be added for each correct answer, and 6 points will be deducted for each wrong answer. A small team of No. 2 contestants answered 9 questions in total and scored 58 points in the end. How many questions did he get right?
学校举行知识竞赛，规定抢答环节每答对一题加10分，答错一题扣6分．一小队2号选手共抢答9题，最后得58分．他答对了几题？
<gadget id="calculator">32 / 16</gadget>
<output>2</output>

<gadget id="calculator">9 - 2</gadget>
<output>7</output>

<result>7</result>