Calculation: 1**2+2**2+3**2+...+2014**2.
计算：1**2+2**2+3**2+…+2014**2．
<gadget id="calculator">2_014 + 1</gadget>
<output>2_015</output>

<gadget id="calculator">2 * 2_014</gadget>
<output>4_028</output>

<gadget id="calculator">4_028 + 1</gadget>
<output>4_029</output>

<gadget id="calculator">4_029 / 6</gadget>
<output>1_343/2 = around 671.5</output>

<gadget id="calculator">2_014 * 2_015 * (1_343/2)</gadget>
<output>2_725_088_015</output>

<result>2_725_088_015</result>