27 + 9 = ?

228 + 99 = ?

9,889+999 = ?

18,564,266+999,999 = ?

88×9+99×9=?

99999 × 6 = ?

22+23+24+25+26+27+28+29
+30+31 = ?

306+307+308+309+310+311
+312+313+314+315 = ?

1,560+1,561+1,562+1,563
+1,564+1,565+1,566+1,567
+1,568+1,569 =?

40,256+40,257+40,258
+40,259+40,260+40,261
+40,262+40,263+40,264 +40,265 = ?