Among the five numbers 0.6, (13/20), (7/10), 67%, (3/7), what is the closest number to (2/3).
0.6、(13/20)、(7/10)、67%、(3/7)这五个数中，最接近(2/3)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>