In a test, a classmate scored 276 points in Chinese, Mathematics, and English. Among them, the average score of Chinese and English is 88.5 points, and how much is the score of mathematics.
某同学在一次测验中，语文、数学、英语三科的总成绩是276分．其中语文和英语的平均成绩是88.5分，数学成绩是多少分．
<gadget id="calculator">88.5 * 2</gadget>
<output>177</output>

<gadget id="calculator">276 - 177</gadget>
<output>99</output>

<result>99</result>