Calculation: (2014*2014+2012)-2013*2013.
计算：(2014*2014+2012)-2013*2013多少．
<gadget id="calculator">2_014 * 2_014</gadget>
<output>4_056_196</output>

<gadget id="calculator">4_056_196 + 2_012</gadget>
<output>4_058_208</output>

<gadget id="calculator">2_013 * 2_013</gadget>
<output>4_052_169</output>

<gadget id="calculator">4_058_208 - 4_052_169</gadget>
<output>6_039</output>

<result>6_039</result>