Calculation: 998877+988776+887766+877665+776655+766554+665544+655443=how much.
计算：998877+988776+887766+877665+776655+766554+665544+655443=多少．
<gadget id="calculator">998_877 + 988_776 + 887_766 + 877_665 + 776_655 + 766_554 + 665_544 + 655_443</gadget>
<output>6_617_280</output>

<result>6_617_280</result>