Teacher Zhang gave the students 10 math puzzles, and stipulated that every correct answer would get 10 points, and every wrong or missed question would be deducted 5 points. Xiaotao finally got 55 points. How many points did he get right? question?
张老师给同学们出了10道数学智力题，并规定每做对一题得10分，每做错或不做一题要倒扣5分，小涛最终得了55分，他做对了几道题？
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<gadget id="calculator">100 - 55</gadget>
<output>45</output>

<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">45 / 15</gadget>
<output>3</output>

<gadget id="calculator">10 - 3</gadget>
<output>7</output>

<result>7</result>