Question

1772727272+7272272727+288383838338

Answer 1

   1.772.727.272                         288.383.838.338

+ 7.272.272.727                      +     9.044.999.999

------------------------                       ------------------------------

  9.044.999.999                          297.428.837.337          

__________________________________________________________

1) 1.772.727.272 + 7.272.272.727 + 288.383.838.338 = 297.428.837.337.

Ответ:  297.428.837.337.