When x=how much, the ratio of (1/4):x is just the smallest prime number.
当x=多少时，(1/4)：x的比值正好是最小的质数．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / 2</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>