(1/4) of a number is 5, what is 35% of this number?
一个数的(1/4)是5，这个数的35%是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">5 / (1/4)</gadget>
<output>20</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">20 * (7/20)</gadget>
<output>7</output>

<result>7</result>