The average score of Xiaohong's language, mathematics and English in the mid-term exam is 93 points, and the average score of Chinese and English is 90 points. How much is Xiaohong's mathematics score?
小红期中考试语、数、英三科的平均分是93分，其中语文和英语的平均分是90分，小红的数学得了多少分．
<gadget id="calculator">93 * 3</gadget>
<output>279</output>

<gadget id="calculator">279 - 90 - 90</gadget>
<output>99</output>

<result>99</result>