9=1×9
108=12×9
11106=1234×9
=123456×9
=1234567×9
=12345678×9
=123456789×9
81=9×9
882=98×9
8883=987×9
88884=9876×9
=987654×9
88888887=
29999930万 320×80800×32 27×16+73×1627+73×16
618+473+127+82
125×32×25
134×99﹣99×34
234÷[(21﹣18)×3]