If(09CUST.IDT = 'kftoa', (09CUST."Tour #Adults" * 09BOAT.ADULT_PRIC + 09BOAT.CHILD_PRIC * 09CUST."Tour #Children"), (09CUST."Tour #Adults" * (09BOAT.ADULT_PRIC - (09BOAT.ADULT_PRIC * 0.1))) + (09CUST."Tour #Children" * (09BOAT.CHILD_PRIC - (09BOAT.CHILD_PRIC * 0.1))))