Xiaoqiao's average score in Chinese and English is 88.5. If he wants the average score of Chinese, Mathematics, and English to be no less than 90, what is the minimum score he needs in Mathematics?
小巧语文、英语两门学科的平均分是88.5分，他要使语文、数学、英语三科的平均分不低于90分，那他数学至少要考多少分．
<gadget id="calculator">90 * 3</gadget>
<output>270</output>

<gadget id="calculator">88.5 * 2</gadget>
<output>177</output>

<gadget id="calculator">270 - 177</gadget>
<output>93</output>

<result>93</result>