(1,9+99+999+9999,2,2999998+299998+29998+2998+298+28.
(1,9+99+999+9999,2,2999998+299998+29998+2998+298+28．
<gadget id="calculator">2_999_998 + 299_998 + 29_998 + 2_998 + 298 + 28</gadget>
<output>3_333_318</output>

<result>3_333_318</result>