Решить задачу по краткой записи. Всего- 90 человек съездили на экскурсию. в 1й день- 31 человек во 2й день- ?. на 12 человек мен

   21 324    :  37                                           216724     : 42

     185          ------------                                   210           ----------

    ---------        576 ( остача 12)                 --------------      516( в остатку 4) 

        282                                                             67

        259                                                             42

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

          234                                                           252

          222                                                           252

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

            12                                                                 4