There are 20 questions in the preparatory grade, 5 points are awarded for a correct question, 3 points are deducted for a wrong or missed question, Chenchen scored 76 points, how many questions did she get right.
预备年级举行数学竞赛，共20道题，做对一道题得5分，做错或者没做一道题扣3分，晨晨得了76分，她做对了多少道题．
<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<gadget id="calculator">100 - 76</gadget>
<output>24</output>

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

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">20 - 3</gadget>
<output>17</output>

<result>17</result>