Calculation: (2/5)*(6/11)+(5/11)/(5/2).
计算：(2/5)*(6/11)+(5/11)/(5/2)．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">(2/5) * (6/11)</gadget>
<output>12/55 = around 0.218182</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/11) / (5/2)</gadget>
<output>2/11 = around 0.181818</output>

<gadget id="calculator">(12/55) + (2/11)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>