Since 1 Hong Kong Dollar is equal to 0.254895263536 Barbadian Dollars, we could say that n Hong Kong Dollars are equal to 0.254895263536 times n Barbadian Dollars. In other words, we could use the following formula:
Barbadian Dollars = Hong Kong Dollars x 0.254895263536
For example, let's say that we want to convert 2 Hong Kong Dollars to Barbadian Dollars. Then, we just replace Hong Kong Dollars in the abovementioned formula with 2:
Barbadian Dollars = 2 x 0.254895263536
That is, 2 Hong Kong Dollars are equal to 0.509790527072 Barbadian Dollars.