Calculation: ((2009+2008*2010)/(2009*2010-1))+((2010+2009*2011)/(2010*2011-1)).
计算：((2009+2008*2010)/(2009*2010-1))+((2010+2009*2011)/(2010*2011-1))．
<gadget id="calculator">2_008 * 2_010</gadget>
<output>4_036_080</output>

<gadget id="calculator">2_009 + 4_036_080</gadget>
<output>4_038_089</output>

<gadget id="calculator">2_009 * 2_010</gadget>
<output>4_038_090</output>

<gadget id="calculator">4_038_090 - 1</gadget>
<output>4_038_089</output>

<gadget id="calculator">4_038_089 / 4_038_089</gadget>
<output>1</output>

<gadget id="calculator">2_009 * 2_011</gadget>
<output>4_040_099</output>

<gadget id="calculator">2_010 + 4_040_099</gadget>
<output>4_042_109</output>

<gadget id="calculator">2_010 * 2_011</gadget>
<output>4_042_110</output>

<gadget id="calculator">4_042_110 - 1</gadget>
<output>4_042_109</output>

<gadget id="calculator">4_042_109 / 4_042_109</gadget>
<output>1</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<result>2</result>