There are 10 questions in a knowledge contest, and each question is worth 10 points. 10 points for a correct answer is represented by +10, and 10 points for a wrong answer is deducted by -10. A student answered 8 questions correctly and answered 2 questions incorrectly. How many points.
一次知识竞赛共10题，每题10分，答对一题得10分用+10表示，答错一题扣10分用-10表示，某同学答对了8题，答错了2题，他得了多少分．
<gadget id="calculator">8 * 10</gadget>
<output>80</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">80 - 20</gadget>
<output>60</output>

<result>60</result>