Calculation: (5/7)(((2/5)+(1/3))/(11/12)).
计算：(5/7)(((2/5)+(1/3))/(11/12))．
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(2/5) + (1/3)</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">11 / 12</gadget>
<output>11/12 = around 0.916667</output>

<gadget id="calculator">(11/15) / (11/12)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(5/7) * (4/5)</gadget>
<output>4/7 = around 0.571429</output>

<result>4/7 = around 0.571429</result>