Since 1 Pakistani Rupee is equal to 0.278359464618 Russian Rubles, we could say that n Pakistani Rupees are equal to 0.278359464618 times n Russian Rubles. In other words, we could use the following formula:
Russian Rubles = Pakistani Rupees x 0.278359464618
For example, let's say that we want to convert 2 Pakistani Rupees to Russian Rubles. Then, we just replace Pakistani Rupees in the abovementioned formula with 2:
Russian Rubles = 2 x 0.278359464618
That is, 2 Pakistani Rupees are equal to 0.556718929236 Russian Rubles.