3*(2/3)/3*(2/3)=how much
3*(2/3)/3*(2/3)=多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 3</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">3 * (2/9) * (2/3)</gadget>
<output>4/9 = around 0.444444</output>

<result>4/9 = around 0.444444</result>