Given 5 numbers, the average of two of them is 84, and the average of the remaining three is 54, what is the average of these five numbers?
5个数，其中两个数的平均数是84，其余三个数的平均数是54，这五个数的平均数是多少．
<gadget id="calculator">348 / 5</gadget>
<output>348/5 = around 69.6</output>

<result>348/5 = around 69.6</result>