Xiao Ming's average score in Chinese, Mathematics, and English is 91 points, and the average score of Chinese and Mathematics is 93 points. What is his English score?
小明的语文、数学、英语三科的平均成绩是91分，语文、数学的平均成绩是93分，他的英语成绩是多少
<gadget id="calculator">91 * 3</gadget>
<output>273</output>

<gadget id="calculator">93 * 2</gadget>
<output>186</output>

<gadget id="calculator">273 - 186</gadget>
<output>87</output>

<result>87</result>