Among the four numbers (2/3), 67%, 0.667, and 0.66, what is the largest number?
在(2/3)、67%、0.667，0.66这四个数中，最大的数是多少．
<gadget id="calculator">67 / 100</gadget>
<output>67/100 = around 0.67</output>

<result>67/100 = around 0.67</result>