Solution ratio: (4/(x))=7:11.
解比例：(4/(x))=7：11．
<gadget id="calculator">7 / 11</gadget>
<output>7/11 = around 0.636364</output>

<gadget id="calculator">4 / (7/11)</gadget>
<output>44/7 = around 6.285714</output>

<result>44/7 = around 6.285714</result>