In 10, 7, 5, 8, 9, 11, what is the median.
在10、7、5、8、9、11中，中位数是多少．
<gadget id="calculator">8 + 9</gadget>
<output>17</output>

<gadget id="calculator">17 / 2</gadget>
<output>17/2 = around 8.5</output>

<result>17/2 = around 8.5</result>