The 1.70 is equal to 58.82% to market price.
(100 divided by 1.70= 58.82%)

If one where Dutching the 2-3 horses, the book percentage would have to be 58.82% or less to equal this div .
(1 divided by 58.82% =1.70)

Try & target races with 10 runners & less if place betting where 3 divs are paid & 10 runners & less if Dutching.

This reduces the run of outs which is something we have to be mindful of because we are dealing with odds-on prices.

There is no right or wrong answer here because it comes back to the ability to target races which favour us statistically.

Try & remember that half the battle is selecting the right races which favour us.

Tip -the best races to target are non handicap races, 10 runners & less, this includes certain maiden races where the whole field has had a run.
Reason for this is that many outsiders come from handicap races so this is not in our favour long term..

Try & target 3-5% profit on bank increase for the day then stop for the day.
The reason for this is that one will find on most days that we hit the 5% mark, we then give it all back by continuing to bet, most times.

We will generally be more successful long term by taking this approach because the window of opportunity, generally only stays open for a limited amount of time.

Try & think in general terms, because nothing usually is exact.

Cheers.

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Cheers.