Xiaoling's average score for Chinese, mathematics, and foreign language last semester was 92, she scored 87 for known Chinese, and 91 for foreign language. How much did she score for mathematics?
小玲上学期语文、数学、外语三门功课的平均分是92分，已知语文得了87分，外语得了91分，数学得了多少分？
<gadget id="calculator">92 * 3</gadget>
<output>276</output>

<gadget id="calculator">276 - 87 - 91</gadget>
<output>98</output>

<result>98</result>