Calculation: 2015*20142015-2014*20152014=
计算：2015*20142015-2014*20152014=
<gadget id="calculator">2_015 * 20_142_015</gadget>
<output>40_586_160_225</output>

<gadget id="calculator">2_014 * 20_152_014</gadget>
<output>40_586_156_196</output>

<gadget id="calculator">40_586_160_225 - 40_586_156_196</gadget>
<output>4_029</output>

<result>4_029</result>