Calculation: (1+(1/2004)+(1/2006)+(1/2008))*((1/2004)+(1/2006)+(1/2008)+(1/2010))- (1+(1/2004)+(1/2006)+(1/2008)+(1/2010))*((1/2004)+(1/2006)+(1/2008))=how much.
计算：(1+(1/2004)+(1/2006)+(1/2008))*((1/2004)+(1/2006)+(1/2008)+(1/2010))-(1+(1/2004)+(1/2006)+(1/2008)+(1/2010))*((1/2004)+(1/2006)+(1/2008))=多少．
<gadget id="calculator">1 / 2_004</gadget>
<output>1/2_004 = around 0.000499</output>

<gadget id="calculator">1 / 2_006</gadget>
<output>1/2_006 = around 0.000499</output>

<gadget id="calculator">1 / 2_008</gadget>
<output>1/2_008 = around 0.000498</output>

<gadget id="calculator">1 + (1/2_004) + (1/2_006) + (1/2_008)</gadget>
<output>1_010_535_037/1_009_026_024 = around 1.001496</output>

<gadget id="calculator">1 / 2_010</gadget>
<output>1/2_010 = around 0.000498</output>

<gadget id="calculator">(1/2_004) + (1/2_006) + (1/2_008) + (1/2_010)</gadget>
<output>224_563_453/112_674_572_680 = around 0.001993</output>

<gadget id="calculator">(1_010_535_037/1_009_026_024) * (224_563_453/112_674_572_680)</gadget>
<output>226_929_237_286_202_761/113_691_576_077_199_424_320 = around 0.001996</output>

<gadget id="calculator">1 + (1/2_004) + (1/2_006) + (1/2_008) + (1/2_010)</gadget>
<output>112_899_136_133/112_674_572_680 = around 1.001993</output>

<gadget id="calculator">(1/2_004) + (1/2_006) + (1/2_008)</gadget>
<output>1_509_013/1_009_026_024 = around 0.001496</output>

<gadget id="calculator">(112_899_136_133/112_674_572_680) * (1_509_013/1_009_026_024)</gadget>
<output>170_366_264_113_466_729/113_691_576_077_199_424_320 = around 0.001498</output>

<gadget id="calculator">(226_929_237_286_202_761/113_691_576_077_199_424_320) - (170_366_264_113_466_729/113_691_576_077_199_424_320)</gadget>
<output>1/2_010 = around 0.000498</output>

<result>1/2_010 = around 0.000498</result>