(1+(1/2008)+(1/2009)+(1/2010))*((1/2008)+(1/2009)+(1/2010)+(1/2011))-(1 +(1/2008)+(1/2009)+(1/2010)+(1/2011))*((1/2008)+(1/2009)+(1/2010))
(1+(1/2008)+(1/2009)+(1/2010))*((1/2008)+(1/2009)+(1/2010)+(1/2011))-(1+(1/2008)+(1/2009)+(1/2010)+(1/2011))*((1/2008)+(1/2009)+(1/2010))
<gadget id="calculator">1 / 2_008</gadget>
<output>1/2_008 = around 0.000498</output>

<gadget id="calculator">1 / 2_009</gadget>
<output>1/2_009 = around 0.000498</output>

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

<gadget id="calculator">1 + (1/2_008) + (1/2_009) + (1/2_010)</gadget>
<output>4_060_296_481/4_054_242_360 = around 1.001493</output>

<gadget id="calculator">1 / 2_011</gadget>
<output>1/2_011 = around 0.000497</output>

<gadget id="calculator">(1/2_008) + (1/2_009) + (1/2_010) + (1/2_011)</gadget>
<output>16_229_079_691/8_153_081_385_960 = around 0.001991</output>

<gadget id="calculator">(4_060_296_481/4_054_242_360) * (16_229_079_691/8_153_081_385_960)</gadget>
<output>65_894_875_159_235_867_371/33_054_567_919_486_541_265_600 = around 0.001994</output>

<gadget id="calculator">1 + (1/2_008) + (1/2_009) + (1/2_010) + (1/2_011)</gadget>
<output>8_169_310_465_651/8_153_081_385_960 = around 1.001991</output>

<gadget id="calculator">(1/2_008) + (1/2_009) + (1/2_010)</gadget>
<output>6_054_121/4_054_242_360 = around 0.001493</output>

<gadget id="calculator">(8_169_310_465_651/8_153_081_385_960) * (6_054_121/4_054_242_360)</gadget>
<output>49_457_994_045_617_497_771/33_054_567_919_486_541_265_600 = around 0.001496</output>

<gadget id="calculator">(65_894_875_159_235_867_371/33_054_567_919_486_541_265_600) - (49_457_994_045_617_497_771/33_054_567_919_486_541_265_600)</gadget>
<output>1/2_011 = around 0.000497</output>

<result>1/2_011 = around 0.000497</result>