Hello, could you please help me answer this question?

Thank you in advance!!

Problem 3 A year ago, the same European investor invested EUR 3 million in a Chilean airline company. She bought shares at a then current exchange rate of CLP 880/EUR. The investor bought the shares at an average price of CLP 56,000 per share. Yesterday, at the end of one year, the exchange rate was CLP 960/EUR. The investor sold the shares at a price of CLP 56,200 per share. What is her profit/loss and rate of return? Problem 4 As a foreign exchange trader, you see the following quotes for Swiss franc (CHF), Canadian dollars (CAD), and Mexican pesos (MXN): CAD 1.35/CHF, MXN 22.00/CHF, MXN 16.80/CAD Is there an arbitrage opportunity here, and if so, how would you exploit it? What would be your return