The school holds a popular science knowledge contest, which stipulates: 10 points for a correct answer, and 6 points for a wrong answer. Cong Cong answered 8 questions in total and scored 64 points in the end. How many questions did she get right?
学校举行科普知识大赛，规定：答对一题加10分，答错一题扣6分．聪聪共抢答8题，最后得分64分．她答对了几题？
<gadget id="calculator">8 * 10</gadget>
<output>80</output>

<gadget id="calculator">80 - 64</gadget>
<output>16</output>

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

<gadget id="calculator">16 / 16</gadget>
<output>1</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<result>7</result>