Since 1 US Dollar is equal to 1.392036 Brunei Dollars, we could say that n United States Dollars are equal to 1.392036 times n Brunei Dollars. In other words, we could use the following formula:
Brunei Dollars = United States Dollars x 1.392036
For example, let's say that we want to convert 2 United States Dollars to Brunei Dollars. Then, we just replace United States Dollars in the abovementioned formula with 2:
Brunei Dollars = 2 x 1.392036
That is, 2 United States Dollars are equal to 2.784072 Brunei Dollars.