The third grade in a certain school held a knowledge contest, with a total of 30 questions. The competition stipulated that if she answered a question correctly, she would get 5 points, and if she did not answer a question or did a wrong question, 3 points would be deducted. Jingjing finally got 102 points. So how many questions did she get right?
某校三年级举行知识竞赛，共有30道题，竞赛规定做对一题得5分，不做或做错一题倒扣3分，晶晶终得102分，那么她做对了多少题？
<gadget id="calculator">30 * 5</gadget>
<output>150</output>

<gadget id="calculator">150 - 102</gadget>
<output>48</output>

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

<gadget id="calculator">48 / 8</gadget>
<output>6</output>

<gadget id="calculator">30 - 6</gadget>
<output>24</output>

<result>24</result>