Since 1 US Dollar is equal to 0.819874 Gibraltar Pounds, we could say that n United States Dollars are equal to 0.819874 times n Gibraltar Pounds. In other words, we could use the following formula:
Gibraltar Pounds = United States Dollars x 0.819874
For example, let's say that we want to convert 2.0 United States Dollars to Gibraltar Pounds. Then, we just replace United States Dollars in the abovementioned formula with 2.0:
Gibraltar Pounds = 2.0 x 0.819874
That is, 2.0 United States Dollars are equal to 1.639748 Gibraltar Pounds.