The number (5/8) of A is 10, what is its 25%.
甲数的(5/8)是10，它的25%是多少．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">10 / (5/8)</gadget>
<output>16</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">16 * (1/4)</gadget>
<output>4</output>

<result>4</result>