A book, obviously 2 days to read it (1/8), according to this calculation how many days he can finish it.
一本书，明明2天看了它的(1/8)，照这样计算他多少天能看完．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) / 2</gadget>
<output>1/16 = around 0.0625</output>

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

<result>16</result>