Since 1 British Pound is equal to 3.884315958092665 Tunisian Dinars, we could say that n British Pounds are equal to 3.884315958092665 times n Tunisian Dinars. In other words, we could use the following formula:
Tunisian Dinars = British Pounds x 3.884315958092665
For example, let's say that we want to convert 2.0 British Pounds to Tunisian Dinars. Then, we just replace British Pounds in the abovementioned formula with 2.0:
Tunisian Dinars = 2.0 x 3.884315958092665
That is, 2.0 British Pounds are equal to 7.76863191618533 Tunisian Dinars.