You want to buy industrial ethanol and you have $125USD to spend. The domestic price is $0.7USD per liter. You can also buy ethanol with free shipping from Canada and Mexico. The price in Canada is $.5CD and the price in Mexico is 10 pesos per liter. The spot US-CA exchange rate is $.085USD and CA-MX exchange rate is 16P. From what country should you buy your ethanol and how much can you afford to buy?