( ) ( ) 7
* ( )
--------------------------
3 8 ( ) 3
( )( ) 6
* 2 ( )
-----------------------------
( )( )( )
( )( )( )
--------------------------------
3 4 0 2
( ) ( ) 7
* ( )
--------------------------
3 8 ( ) 3
( )( ) 6
* 2 ( )
-----------------------------
( )( )( )
( )( )( )
--------------------------------
3 4 0 2
427
* 9
--------------------------
3 8 4 3
126
* 27
-----------------------------
882
252
--------------------------------
3 4 0 2