① (1)2 (3)(4)
× (5) 6
—————————
(7)(4)0 4
(6)(1) 7 0
——————————
(6)(9)(1)(0)(4)
② (1) 2 (7)(9)
× (7) 6
————————
(7)(6)(7) 4
(8)(9) 5 3
————————
(9)(7)(2)(0)(4)
① (1)2 (3)(4)
× (5) 6
—————————
(7)(4)0 4
(6)(1) 7 0
——————————
(6)(9)(1)(0)(4)
② (1) 2 (7)(9)
× (7) 6
————————
(7)(6)(7) 4
(8)(9) 5 3
————————
(9)(7)(2)(0)(4)