Calculation: (7/12)*(5/7)/(7/12)*(5/7).
计算：(7/12)*(5/7)/(7/12)*(5/7)．
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">(5/7) / (7/12)</gadget>
<output>60/49 = around 1.22449</output>

<gadget id="calculator">(7/12) * (60/49) * (5/7)</gadget>
<output>25/49 = around 0.510204</output>

<result>25/49 = around 0.510204</result>