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But how can 0.4 = 0.89 it doesn't existe 😑

Steemit website counts SBD as if it was worth $1, but in fact it is currently worth ~$7.50.
Most of the rewards (currently about 85%) are paid out in SBD, so your reward will be worth more than what steemit site shows.
Let me know how much your reward was after post payout.

Ok we will see