In the first study group of a certain class, in a unit test, 4 girls scored 69 points less than 5 boys. It is known that the average score of girls is 91.5 points. What is the average score of boys?
某班第一学习小组在一次单元测验中，4名女生比5名男生得分少69分，已知女生平均分是91.5分，男生的平均分是多少分．
<gadget id="calculator">91.5 * 4</gadget>
<output>366</output>

<gadget id="calculator">366 + 69</gadget>
<output>435</output>

<gadget id="calculator">435 / 5</gadget>
<output>87</output>

<result>87</result>