999+998+997 ten 996+1000+1004+1003+1002+1001.
999+998+997十996+1000+1004+1003+1002+1001．
<gadget id="calculator">999 + 998 + 997 + 996 + 1_000 + 1_004 + 1_003 + 1_002 + 1_001</gadget>
<output>9_000</output>

<result>9_000</result>