In the math test with a full score of 100, Xiaolan's average score in the first 4 tests is 85. After the fifth test, what is the maximum score for her average score?
小兰在满分为100分的数学测试中，前4次测试平均成绩为85分，第五次测试后，她的平均分最多多少分．
<gadget id="calculator">85 * 4</gadget>
<output>340</output>

<gadget id="calculator">340 + 100</gadget>
<output>440</output>

<gadget id="calculator">440 / 5</gadget>
<output>88</output>

<result>88</result>