After inserting a number x in a set of data 0, 1, 4, 5, 8, the median of the set of data is 3, then x = how many.
在一组数据0，1，4，5，8中插入一个数x后，该组数据的中位数为3，则x=多少．
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / (1/2)</gadget>
<output>2</output>

<result>2</result>