                   .    ,       .     http://infostart.ru/projects/index.php?id=562&ref=987 (  ()     9.2).  ,     "" ,  "   " = "   " - "   " + 1,        .

:
- ,
- ,
-    (    ),
-    (    ),
-     ,
-      (      ,       ),
-   (  ),
-   ,     
-    (     ),
-    ,
-  ,
-  .

,  ,      ,      2 .
    : 5 .
 : 7.
  : 2 * 7 = 14 .
  : 14 - 5 = 9 .

[b]  !   ""    !    -      -     .[/b]