In a math competition, there are 20 questions in total, 5 points for each correct answer, 0 points for no answer, 2 points deducted for a wrong answer, Xiao Wang got 64 points, if no answer is as many as wrong answer , how many questions did he answer correctly? Please write your reason.
在一次数学竞赛中，共有20道题，每答对一道题得5分，不答得0分，答错一道题倒扣2分，小王得了64分，如果不答和答错的题目一样多，他答对几题？请写出你的理由．
<gadget id="calculator">5 * 20</gadget>
<output>100</output>

<gadget id="calculator">100 - 64</gadget>
<output>36</output>

<gadget id="calculator">5 + 2 + 0 + 5</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">36 / 6</gadget>
<output>6</output>

<gadget id="calculator">20 - 6</gadget>
<output>14</output>

<result>14</result>