2 0 9
× 4 6
______________
1 2 5 4
8 3 6
______________
9 6 1 4
3 7 2
× 3 8
______________
2 5 7 6
1 1 1 6
______________
1 3 7 3 6
3 0 5
× 4 1
______________
3 0 5
1 2 2 0
______________
1 2 5 0 5
或
3 1 5
× 4 1
______________
3 1 5
1 2 6 0
______________
1 2 9 1 5