(7/10)*10/(7/10)*10=how much
(7/10)*10/(7/10)*10=多少
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">10 / (7/10)</gadget>
<output>100/7 = around 14.285714</output>

<gadget id="calculator">(7/10) * (100/7) * 10</gadget>
<output>100</output>

<result>100</result>