Since 1 US Dollar is equal to 1.327599 Brunei Dollars, we could say that n United States Dollars are equal to 1.327599 times n Brunei Dollars. In other words, we could use the following formula:
Brunei Dollars = United States Dollars x 1.327599
For example, let's say that we want to convert 2.0 United States Dollars to Brunei Dollars. Then, we just replace United States Dollars in the abovementioned formula with 2.0:
Brunei Dollars = 2.0 x 1.327599
That is, 2.0 United States Dollars are equal to 2.655198 Brunei Dollars.