The average score of Toto's first three math tests was 84, and the fourth test was 100 points. What is the average score of Toto's four math tests?
多多前3次数学考试的平均成绩是84分，第4次考了100分，多多4次数学考试的平均成绩是多少分．
<gadget id="calculator">84 * 3</gadget>
<output>252</output>

<gadget id="calculator">252 + 100</gadget>
<output>352</output>

<gadget id="calculator">352 / 4</gadget>
<output>88</output>

<result>88</result>