Among the four numbers (2/3), 0.6, 67%, and 6, what is the third number in descending order?
在(2/3)，0.6，67%，和6这四个数中，按从大到小的顺序排列，第三个数是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>