There were a total of 20 questions in a primary school mathematics competition. The scoring standard was: 5 points for each correct answer, and 3 points deducted for each wrong answer or non-answer. Xiaoxiao participated in this competition and scored 68 points. How many questions did she get right?
某次小学数学竞赛，共有20道题，评分标准是：每做对一题得5分，每做错一题或不做都倒扣3分．笑笑参加了这次竞赛，得了68分，求她做对了几道题？
<gadget id="calculator">20 * 5</gadget>
<output>100</output>

<gadget id="calculator">100 - 68</gadget>
<output>32</output>

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

<gadget id="calculator">32 / 8</gadget>
<output>4</output>

<gadget id="calculator">20 - 4</gadget>
<output>16</output>

<result>16</result>