you times 230.00 dollars and 0.55 and then your answer is 126.50 , then you subtract 230.00 dollars and 126.50 and then your answer is 103.50 , then you times 103.50 and 0.10 and then your answer is 10.35 and then you do finally is subtract 103.50 and 10.35 and then your get 93.15 and your answer is 93.15