0.{_{9}**(．)}+1.{_{9}**(．)}+2.{_{9}**(．)}+3.{_{9}* *(．)}+4.{_{9}**(．)}+5.{_{9}**(．)}+6.{_{9}**(．)}+7. {_{9}**(.)}+8.{_{9}**(.)}+9.{_{9}**(.)}.
0.{_{9}**(．)}+1.{_{9}**(．)}+2.{_{9}**(．)}+3.{_{9}**(．)}+4.{_{9}**(．)}+5.{_{9}**(．)}+6.{_{9}**(．)}+7.{_{9}**(．)}+8.{_{9}**(．)}+9.{_{9}**(．)}．
<gadget id="calculator">1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10</gadget>
<output>55</output>

<result>55</result>