Solution ratio: ((2x)/(x+6))=(11/8).
解比例：((2x)/(x+6))=(11/8)．
<gadget id="calculator">11 / 8</gadget>
<output>11/8 = around 1.375</output>

<gadget id="calculator">(11/8) * 6</gadget>
<output>33/4 = around 8.25</output>

<gadget id="calculator">2 - (11/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(33/4) / (5/8)</gadget>
<output>66/5 = around 13.2</output>

<result>66/5 = around 13.2</result>