Simple calculation: (11/18)*9-(11/18)*6-(11/18).
简便计算：(11/18)*9-(11/18)*6-(11/18)．
<gadget id="calculator">11 / 18</gadget>
<output>11/18 = around 0.611111</output>

<gadget id="calculator">(11/18) * 9</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">(11/18) * 6</gadget>
<output>11/3 = around 3.666667</output>

<gadget id="calculator">(11/2) - (11/3) - (11/18)</gadget>
<output>11/9 = around 1.222222</output>

<result>11/9 = around 1.222222</result>