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..... mira ahora esto otro.

(1 x 8) + 1 = 9
(12 x 8) + 2 = 98
(123 x 8) + 3 = 987
(1234 x 8) + 4 = 9876
(12345 x 8) + 5 = 98765
(123456 x 8) + 6 = 987654
(1234567 x 8) + 7 = 9876543
(12345678 x 8 + 8 = 98765432
(123456789 x 8) + 9 = 987654321