2009*2009/2009+1=how much.
2009*2009/2009+1=多少．
<gadget id="calculator">2_009 / 2_009</gadget>
<output>1</output>

<gadget id="calculator">2_009 * 1</gadget>
<output>2_009</output>

<gadget id="calculator">2_009 + 1</gadget>
<output>2_010</output>

<result>2_010</result>