Since 1 Pakistani Rupee is equal to 0.3819346644309551 Serbian Dinars, we could say that n Pakistani Rupees are equal to 0.3819346644309551 times n Serbian Dinars. In other words, we could use the following formula:
Serbian Dinars = Pakistani Rupees x 0.3819346644309551
For example, let's say that we want to convert 2.0 Pakistani Rupees to Serbian Dinars. Then, we just replace Pakistani Rupees in the abovementioned formula with 2.0:
Serbian Dinars = 2.0 x 0.3819346644309551
That is, 2.0 Pakistani Rupees are equal to 0.7638693288619102 Serbian Dinars.