lets calculate expenses step by step:
room = (330 + 4)115.62 = 10868.28, those are the total days multiplied by the room cost
flight = 45.70 + 32.49 = 78.19
food = (330 + 4)15 = 1410
win = 75
lost = 25
so the total is:
total = room + flight + food + lost - win
= 12306.47
that is the cost of the entire trip, note how we subtracted the win from all other expenses