A U.S.-based currency dealer has good credit and can borrow $1,000,000 or 800,000 for one year. The one-year interest rate in the U.S. is i$ = 2% and in the euro zone the one-year interest rate is i = 6%. The spot exchange rate is $1.25 = 1.00 and the one-year forward exchange rate is $1.20 = 1.00. Based on the given information, show how to realise a certain profit in dollar via covered interest arbitrage.