(1/3) of A's number is 6, what is its 20%?
甲数的(1/3)是6，它的20%是多少．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 / (1/3)</gadget>
<output>18</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">18 * (1/5)</gadget>
<output>18/5 = around 3.6</output>

<result>18/5 = around 3.6</result>