please show how to do it

John sold a put option on Euro for exist.04 per unit. The strike price was exist1.30, and the spot rate at the time the option was exercised was exist1.27. Assume John immediately sold off the Euro received when the option was exercised. Also assume that there are 50,000 units in a Euro option. What was John's net profit on the put option? Baylor Bank believes the New Zealand dollar will depreciated over the next 15 days from exist.91 to exist.89. The following annual interest rates apply