The class organizes a knowledge contest, and the contestants rush to answer. 10 points are awarded for a correct answer, and 6 points are deducted for a wrong answer. Xiao Ming answered 12 questions in total and scored 72 points in the end. How many questions did Xiao Ming answer correctly?
班里组织知识竞赛，选手进行抢答．答对一题加10分，答错一题倒扣6分．小明共抢答12道题，最后得分72分．小明共答对多少题．
<gadget id="calculator">10 * 12</gadget>
<output>120</output>

<gadget id="calculator">120 - 72</gadget>
<output>48</output>

<gadget id="calculator">10 + 6</gadget>
<output>16</output>

<gadget id="calculator">48 / 16</gadget>
<output>3</output>

<gadget id="calculator">12 - 3</gadget>
<output>9</output>

<result>9</result>