How many (1/4) are subtracted consecutively from 4, and the result is 0.
从4里面连续减去多少个(1/4)，结果是0．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<result>16</result>