After adding the numerator and denominator of (1/11), it can be divided into (1/3).
(1/11)的分子、分母同时加上多少后，可约分成(1/3)．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">11 / 1</gadget>
<output>11</output>

<gadget id="calculator">(1/3) * 11</gadget>
<output>11/3 = around 3.666667</output>

<gadget id="calculator">(11/3) - 1</gadget>
<output>8/3 = around 2.666667</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(8/3) / (2/3)</gadget>
<output>4</output>

<result>4</result>