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You’re multiplying both the integral and the fractional part of each product by 8 each time, instead of multiplying only the part to the right of the octal point.
What you did:What you should have done:
− 1
− 1
8
8
0.80.8
× 8
× 8
6.46.4
× 8
× 8
(8 × .4, not 8 × 6.4)
51.23.2
× 8
× 8
(8 × .2, not 8 × 3.2)
409.6 , etc.1.6 , etc.
Besides that, the 9 you got as your third digit should have tipped you off that something was wrong. We don’t have any 9’s in the octal system, do we?
