What is the (2/3) difference of 9 (2/3) minus 9?
9个(2/3)减去9的(2/3)差是多少？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 9</gadget>
<output>6</output>

<gadget id="calculator">6 - 6</gadget>
<output>0</output>

<result>0</result>