May someone please help me! I keep getting the wrong answer.

Suppose your company imports computer motherboards from Singapore. The exchange rate is currently 1.2855 S\$IUS\$. You have just placed an order for 24,000 motherboards at a cost to you of 231.00 Singapore dollars each. You will pay for the shipment when it arrives in 90 days. You can sell the motherboards for $194 each. a. What is your profit at the current exchange rate? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. What is your profit if the exchange rate goes up by 10 percent over the next 90 days? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) c. What is your profit if the exchange rate goes down by 10 percent over the next 90 days? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) d. What is the break-even exchange rate? (Round your answer to 4 decimal places, e.g., 32.1616.) e. What percentage rise or fall does this represent in terms of the Singapore dollar versus the U.S. dollar? (Input the value as a positive number. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Answer is complete but not entirely correct