Wang Ming's grades in the mid-term exam: 92 points in Chinese, 96 points in mathematics, and the average score of these three subjects is 93 points.
期中考试王明的成绩：语文是92分，数学成绩是96分，英语成绩考多少分就可以使这三门功课的平均成绩为93分．
<gadget id="calculator">93 * 3</gadget>
<output>279</output>

<gadget id="calculator">279 - 96 - 92</gadget>
<output>91</output>

<result>91</result>