Calculation: (1+(1/2)+(1/3)+(1/4))*((1/3)+(1/4)+1)-(1+(1/3)+( 1/4))*((1/2)+(1/3)+(1/4)).
计算：(1+(1/2)+(1/3)+(1/4))*((1/3)+(1/4)+1)-(1+(1/3)+(1/4))*((1/2)+(1/3)+(1/4))．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

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

<gadget id="calculator">1 + (1/2) + (1/3) + (1/4)</gadget>
<output>25/12 = around 2.083333</output>

<gadget id="calculator">(1/3) + (1/4) + 1</gadget>
<output>19/12 = around 1.583333</output>

<gadget id="calculator">(25/12) * (19/12)</gadget>
<output>475/144 = around 3.298611</output>

<gadget id="calculator">1 + (1/3) + (1/4)</gadget>
<output>19/12 = around 1.583333</output>

<gadget id="calculator">(1/2) + (1/3) + (1/4)</gadget>
<output>13/12 = around 1.083333</output>

<gadget id="calculator">(19/12) * (13/12)</gadget>
<output>247/144 = around 1.715278</output>

<gadget id="calculator">(475/144) - (247/144)</gadget>
<output>19/12 = around 1.583333</output>

<result>19/12 = around 1.583333</result>