In the final exam of the fourth grade, Xiao Ming scored an average of 96 points in Chinese, Mathematics, and English, 89 points in Known Chinese, and 100 points in English. How much is the score in Mathematics?
小明在四年级期末考试中，语文、数学、英语三科平均成绩是96分，已知语文89分，英语100分，那么数学是多少分？
<gadget id="calculator">96 * 3</gadget>
<output>288</output>

<gadget id="calculator">288 - 89 - 100</gadget>
<output>99</output>

<result>99</result>