Since 1 Canadian Dollar is equal to 0.7447957397683685 US Dollars, we could say that n Canadian Dollars are equal to 0.7447957397683685 times n US Dollars. In other words, we could use the following formula:
US Dollars = Canadian Dollars x 0.7447957397683685
For example, let's say that we want to convert 2.0 Canadian Dollars to US Dollars. Then, we just replace Canadian Dollars in the abovementioned formula with 2.0:
US Dollars = 2.0 x 0.7447957397683685
That is, 2.0 Canadian Dollars are equal to 1.489591479536737 US Dollars.