There are 7 numbers whose average is 154. Arrange these numbers in ascending order, then the first two numbers are 136, and the average of the last four numbers is 164. Find the third number.
有7个数，它们的平均数是154．把这些数按从小到大的顺序排列起来，那么前两个数是136，后四个数的平均数是164，求第三个数是多少．
<gadget id="calculator">154 * 7</gadget>
<output>1_078</output>

<gadget id="calculator">136 * 2</gadget>
<output>272</output>

<gadget id="calculator">164 * 4</gadget>
<output>656</output>

<gadget id="calculator">1_078 - 272 - 656</gadget>
<output>150</output>

<result>150</result>