··· 2(3).5
*(7).6(4)
——————
(9)4(0)
1(4)1(0)
(1)6( 4)5
——————————
1(7)9 .(5)4(0)
(1) 8. 0 9
--------------------
1.(2) /2(1).(7)(0)(8)
(1)(2)
------------------------------
(9) 7
(9) (6)
-------------------------
1 (0)(8)
(1)(0)(8)
----------------------------
0