how i can calculate if a river call make or lose money ?.....

[andrix]

how i can calculate if a river call make or lose money ?
example:
at river i have higmidpair ,my play is check if i am first bettor and call unraised pot with 2 or less player.....
i want calculate if this my call on long term lose or make money,for this what formula i have to applicate ?
i have to considerer preflop-flop-turn-river cost ?
i have to considerer preflop-flop-turn-river money win ?

Formula:
Totalwins= TW (every preflop-flop-turn-river money win ?)
Opponent(s) spent money=OM
You spent money=SM

TW-(PreflopSM+PreflopOM+FlopSM+FlopOM+TurnSM+TurnOM+r iverOM+riverSM)
is correct this ?
anyone can help me ?