Calculate the cost of buying fuel in Canada based on cost per litre in Canadian dollars, the currency exchange rate from USD ( US Dollar) to CAD (Canadian dollar)with results in US dollars per litre and gallon.

Price of gas fluctuates as does the currency exchange

Example:
```Cost of one litre of gas in Canada  =  \$1.45
One USD exchanged to CAD   =  \$ 0.78 USD
One litre  = 0.264 172 US gallon
One US gallon = 3.785 litres

cost of one litre of gas in USD =  1.45 * 0.78 = \$ 1.06
cost of one US gallon of gas in CAD = 1.45 * 3.785 =  \$ 5.49
cost of one gallon of gas in USD = 5.49 * 0.78 =  \$ 4.28
```

Price of Fuel per Litre in Canadian Dollars

#### Results:

 Cost per Litre in US Dollars Cost per Gallon Canadian Dollars Cost per Gallon in US Dollars

#### The Calculation

1. price of one litre of fuel in Canadian dollars
2. currency exchange, the cost of one Canadian Dollar in US Dollars

#### Results

1. cost of one litre of fuel in US dollars
2. cost of one US gallon of fuel in Canadian dollars
3. cost of one US gallon of fuel in US dollars