Since 1 US Dollar is equal to 0.798678 Saint Helena Pounds, we could say that n United States Dollars are equal to 0.798678 times n Saint Helena Pounds. In other words, we could use the following formula:
Saint Helena Pounds = United States Dollars x 0.798678
For example, let's say that we want to convert 2.0 United States Dollars to Saint Helena Pounds. Then, we just replace United States Dollars in the abovementioned formula with 2.0:
Saint Helena Pounds = 2.0 x 0.798678
That is, 2.0 United States Dollars are equal to 1.597356 Saint Helena Pounds.