Since 1 British Pound is equal to 197.342129312 Jamaican Dollars, we could say that n British Pounds are equal to 197.342129312 times n Jamaican Dollars. In other words, we could use the following formula:
Jamaican Dollars = British Pounds x 197.342129312
For example, let's say that we want to convert 2 British Pounds to Jamaican Dollars. Then, we just replace British Pounds in the abovementioned formula with 2:
Jamaican Dollars = 2 x 197.342129312
That is, 2 British Pounds are equal to 394.684258624 Jamaican Dollars.