Calculation: 2012*2014*((1/(2012*2013))+(1/(2013*2014))).
计算：2012*2014*((1/(2012*2013))+(1/(2013*2014)))．
<gadget id="calculator">2_012 * 2_013</gadget>
<output>4_050_156</output>

<gadget id="calculator">1 / 4_050_156</gadget>
<output>1/4_050_156 = around 0</output>

<gadget id="calculator">2_013 * 2_014</gadget>
<output>4_054_182</output>

<gadget id="calculator">1 / 4_054_182</gadget>
<output>1/4_054_182 = around 0</output>

<gadget id="calculator">(1/4_050_156) + (1/4_054_182)</gadget>
<output>1/2_026_084 = around 0</output>

<gadget id="calculator">2_012 * 2_014 * (1/2_026_084)</gadget>
<output>2</output>

<result>2</result>