(1/4) of a number is 200, what is (5/8) of this number.
一个数的(1/4)是200，这个数的(5/8)是多少．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">200 / (1/4)</gadget>
<output>800</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">800 * (5/8)</gadget>
<output>500</output>

<result>500</result>