Calculation: 2007-7*11*13*2=how much.
计算：2007-7*11*13*2=多少．
<gadget id="calculator">7 * 11 * 13 * 2</gadget>
<output>2_002</output>

<gadget id="calculator">2_007 - 2_002</gadget>
<output>5</output>

<result>5</result>