Insert a piece of data into the set of data of 2, 28, 17, 15, and 32.8, so that the median of the set of data is 16.5, how much is the inserted data
在2，28，17，15，32.8这一组数据中插入一个数据，使得该组数据的中位数是16.5，插入的数据是多少
<gadget id="calculator">16.5 * 2</gadget>
<output>33</output>

<gadget id="calculator">33 - 17</gadget>
<output>16</output>

<result>16</result>