There are 15 questions in a math exercise, 8 points are awarded for each correct question, 4 points are deducted for each incorrect question, and Xiaoling gets a total of 72 points for completing all the questions. How many questions did she get right?
一次数学练习共有15道题，每做对一题得8分，做错一题倒扣4分，小玲做完全部题共得72分，则她做对了多少题？
<gadget id="calculator">8 * 15</gadget>
<output>120</output>

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

<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">48 / 12</gadget>
<output>4</output>

<gadget id="calculator">15 - 4</gadget>
<output>11</output>

<result>11</result>