Calculation: 2014**2-2013**2+2012**2-2011**2+...-3**2+2**2-1.
计算：2014**2-2013**2+2012**2-2011**2+…-3**2+2**2-1．
<gadget id="calculator">4_027 + 3</gadget>
<output>4_030</output>

<gadget id="calculator">2_014 / 2</gadget>
<output>1_007</output>

<gadget id="calculator">1_007 / 2</gadget>
<output>1_007/2 = around 503.5</output>

<gadget id="calculator">4_030 * (1_007/2)</gadget>
<output>2_029_105</output>

<result>2_029_105</result>