(5/8) of a number is 40, what is (1/4) of this number.
一个数的(5/8)是40，这个数的(1/4)是多少．
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">40 / (5/8)</gadget>
<output>64</output>

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

<gadget id="calculator">64 * (1/4)</gadget>
<output>16</output>

<result>16</result>