There is a set of numbers: 4.2, 5.7, 6.3, 3.5, 5.6, 5.8, what is the median of these 6 numbers.
有一组数：4.2，5.7，6.3，3.5，5.6，5.8，这6个数的中位数是多少．
<gadget id="calculator">5.6 + 5.7</gadget>
<output>11.3</output>

<gadget id="calculator">11.3 / 2</gadget>
<output>5.65</output>

<result>5.65</result>