There are five numbers, their average is 92, the average of the first three numbers is 93, and the average of the last three numbers is 89, do you know what the middle number is?
有五个数，它们的平均数是92，其中前三个数的平均数是93，后三个数的平均数是89，你知道中间的一个数是多少吗？
<gadget id="calculator">93 * 3</gadget>
<output>279</output>

<gadget id="calculator">89 * 3</gadget>
<output>267</output>

<gadget id="calculator">279 + 267</gadget>
<output>546</output>

<gadget id="calculator">92 * 5</gadget>
<output>460</output>

<gadget id="calculator">546 - 460</gadget>
<output>86</output>

<result>86</result>