The average of the three numbers a, b, and c is 81, and the average of d and e is 96. What is the average of these five numbers?
a，b，c三个数的平均数是81，d和e的平均数是96，这五个数的平均数是多少．
<gadget id="calculator">81 * 3</gadget>
<output>243</output>

<gadget id="calculator">96 * 2</gadget>
<output>192</output>

<gadget id="calculator">243 + 192</gadget>
<output>435</output>

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

<result>87</result>