123456789 х 9
= 111 111 111
123456789 х 18 = 222 222 222
123456789 х 27 = 333 333 333
123456789 х 36 = 444 444 444
123456789 х 45 = 555 555 555
123456789 х 54 = 666 666 666
123456789 х 63 = 777 777 777
123456789 х 72 = 888 888 888
123456789 х 81 = 999 999 999
9 x 9 = 81
99 x 99 = 9801
999 x 999 = 998001
9999 x 9999 = 99980001
99999 x 99999 = 9999800001
999999 x 999999 = 999998000001
9999999 x 9999999 = 99999980000001
99999999 x 99999999 = 9999999800000001
999999999 x 999999999 = 999999998000000001
6 x 7 = 42
66 x 67 = 4422
666 x 667 = 444222
6666 x 6667 = 44442222
66666 x 66667 = 4444422222
666666 x 666667 = 444444222222
6666666 x 6666667 = 44444442222222
66666666 x 66666667 = 4444444422222222
666666666 x 666666667 = 444444444222222222
9 × 9 + 7 = 88
1
× 8 + 1 = 9
98 × 9 + 6 = 888 12 × 8 + 2 = 98
987 × 9 + 5 = 8888 123 × 8 + 3 = 987
9876 × 9 + 4 = 88888 1234 × 8 + 4 =9876
98765 × 9 + 3
= 888888 12345 × 8 + 5 =98765
987654 × 9 + 2
= 8888888 123456 × 8 + 6 =987654
9876543 × 9 +
1 = 88888888 1234567
× 8 + 7 =9876543
98765432 × 9 +
0 = 888888888 12345678
× 8 + 8 =98765432
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