When X=how much, the ratio of (2/7):x is the smallest composite number.
当X=多少时，(2/7)：x的比值是最小的合数．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(2/7) / 4</gadget>
<output>1/14 = around 0.071429</output>

<result>1/14 = around 0.071429</result>