Multi race payout calculation

[gamblin4ever]

I like playing multi race wagers more than single race.
Is there a way to estimate a payout in multi race wagers ( P3,P4 etc) before placing wager, not knowing pool totals & etc?
ex: Saratoga r3 - $1 P3 m/l odds)
1st leg - 3 horses w/odds of
5/1,13/1, 9/5
2nd leg - single fav
even money
3rd leg - 2 horses
4/1, 5/2

Can you estimate what the payouts might be? I'm just trying to figure the value to see if I should make the wager instead of blindly wagering money.
Any info would be helpful. Thanks in advance.