General Math

Three peoples go to a restaurant for a dinner and the total bill is 75 Euros and each of them collect 25 Euros and give 75 Euros to waiter and waiter gives 75 Euros to bill counter but the manager gives 5 Euros discount and returns 5 euros to waiter to returns back to that peoples then wait takes 2 euros as a tip and returns 3 euros to that peoples and they divide one, one,one euros then it mean that everyone pay 24 euros each when we multiply 24*3=72 and 2 euros for waiter then 72+2=74, so anybody tells where is 1 euro?Because actual bill is 75 euros.