Simple calculation: (((1/2)+(1/4)+(1/8))/((1/3)+(1/6)+(1/12)))-(((1/ 4)+(1/8)+(1/12))/((1/5)+(1/10)+(1/15))).
简便计算：(((1/2)+(1/4)+(1/8))/((1/3)+(1/6)+(1/12)))-(((1/4)+(1/8)+(1/12))/((1/5)+(1/10)+(1/15)))．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/2) + (1/4) + (1/8)</gadget>
<output>7/8 = around 0.875</output>

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

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/3) + (1/6) + (1/12)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(7/8) / (7/12)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(1/4) + (1/8) + (1/12)</gadget>
<output>11/24 = around 0.458333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/5) + (1/10) + (1/15)</gadget>
<output>11/30 = around 0.366667</output>

<gadget id="calculator">(11/24) / (11/30)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(3/2) - (5/4)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>