How much more is (2/3) of (9/10) than the reciprocal of (20/11)?
(9/10)的(2/3)比(20/11)的倒数多多少？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(9/10) * (2/3)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 / 11</gadget>
<output>20/11 = around 1.818182</output>

<gadget id="calculator">1 / (20/11)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">(3/5) - (11/20)</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>