Xiaolan participated in the final exam of five subjects, and the average score of the other four subjects was 87 points except mathematics. If the mathematics score is added, the average score of the five subjects is 2 points more than the average score of the four subjects. What is Xiaolan's math score?
小兰参加了五科的期末考试，除数学以外其它四科的平均成绩是87分．如果将数学成绩加进去，五科平均成绩比四科平均成绩多2分．小兰的数学成绩是多少分．
<gadget id="calculator">87 + 2</gadget>
<output>89</output>

<gadget id="calculator">89 * 5</gadget>
<output>445</output>

<gadget id="calculator">87 * 4</gadget>
<output>348</output>

<gadget id="calculator">445 - 348</gadget>
<output>97</output>

<result>97</result>