Since 1 Mexican Peso is equal to 4.189471912341743 Russian Rubles, we could say that n Mexican Pesos are equal to 4.189471912341743 times n Russian Rubles. In other words, we could use the following formula:
Russian Rubles = Mexican Pesos x 4.189471912341743
For example, let's say that we want to convert 2.0 Mexican Pesos to Russian Rubles. Then, we just replace Mexican Pesos in the abovementioned formula with 2.0:
Russian Rubles = 2.0 x 4.189471912341743
That is, 2.0 Mexican Pesos are equal to 8.378943824683486 Russian Rubles.