In a mathematics competition, there are 20 questions in total, 5 points are awarded for answering one question correctly, and 3 points are deducted for answering one question incorrectly or not. It is known that Gege got 76 points, how many questions did he answer correctly.
一次数学竞赛，共有20道题，答对一道题得5分，答错或者不答一道题倒扣3分．已知格格同学得到76分，他答对了多少道题．
<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>