In the mathematics competition organized by the school, the total score of the 5 boys in Class 61 was 405 points, and the average score of the 7 girls was 87 points. What is the average score of the whole class in this competition?
在学校组织的数学竞赛中，六1班5名男生的总分是405分，7名女生的平均成绩是87分，本次竞赛中全班的平均成绩是多少分？
<gadget id="calculator">87 * 7</gadget>
<output>609</output>

<gadget id="calculator">405 + 609</gadget>
<output>1_014</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">1_014 / 12</gadget>
<output>169/2 = around 84.5</output>

<result>169/2 = around 84.5</result>