The relative steepness or flatness (more inelastic / more elastic) of the demand curve compared to the supply curve, affects the amount and split of revenue generated. If supply is relatively more elastic than demand, then the split (tax burden} of revenue generated falls more on the consumer.
It is useful to note that the imposition of the $10.00 per-unit tax only raised the market price by $5.60 -- consumers will substitute away from this good as it becomes relatively more expensive. So. $56.60 is paid to the seller (producer), but this seller needs to pay $10.00 per-unit, or $34,444.40 to the taxing-jurisdiction. Thus, the seller keeps $45.60 per-unit or $4.40 per-unit less than the market price in the absence of the tax.
Excise Tax: $10.00 per unit
Price paid by the consumer: $56.60, an increase of $5.60
Price received by the producer: $46.60, a reduction of $4.40
Tax paid by the consumer: $5.60 x 3,444.4 units = $19,288.64
Tax paid by the producer: $4.40 x 3,444.4 units = $15,155.36
In the example above, the change in price paid by the consumer ($5.60) is more than half of the per-unit tax of $10.00. If demand were to be relative flatter (demand is more price sensitive) when compared to supply, the increase in price to the consumer would be less and the seller would receive less net of taxes paid.