The average score of Li Xing's four math tests is 88 points, and the average score of the previous three times is 85 points. How many points did you score in the fourth test?
李星同学四次数学考试平均成绩是88分，前三次的平均成绩是85分．第四次考了多少分？
<gadget id="calculator">88 * 4</gadget>
<output>352</output>

<gadget id="calculator">85 * 3</gadget>
<output>255</output>

<gadget id="calculator">352 - 255</gadget>
<output>97</output>

<result>97</result>