0+3+6+9+...+2004+2007+2010=how much.
0+3+6+9+…+2004+2007+2010=多少．
<gadget id="calculator">3 + 2_010</gadget>
<output>2_013</output>

<gadget id="calculator">2_010 / 3 / 2</gadget>
<output>335</output>

<gadget id="calculator">2_013 * 335</gadget>
<output>674_355</output>

<result>674_355</result>