Calculation: 123*9+82*8+41*7-2009=how much.
计算：123*9+82*8+41*7-2009=多少．
<gadget id="calculator">41 * 3 * 9</gadget>
<output>1_107</output>

<gadget id="calculator">41 * 2 * 8</gadget>
<output>656</output>

<gadget id="calculator">41 * 7</gadget>
<output>287</output>

<gadget id="calculator">41 * 49</gadget>
<output>2_009</output>

<gadget id="calculator">287 - 2_009</gadget>
<output>-1_722</output>

<gadget id="calculator">1_107 + 656 + (-1_722)</gadget>
<output>41</output>

<result>41</result>