Since 1 Mexican Peso is equal to 18.400570649781184 Sri Lankan Rupees, we could say that n Mexican Pesos are equal to 18.400570649781184 times n Sri Lankan Rupees. In other words, we could use the following formula:
Sri Lankan Rupees = Mexican Pesos x 18.400570649781184
For example, let's say that we want to convert 2.0 Mexican Pesos to Sri Lankan Rupees. Then, we just replace Mexican Pesos in the abovementioned formula with 2.0:
Sri Lankan Rupees = 2.0 x 18.400570649781184
That is, 2.0 Mexican Pesos are equal to 36.80114129956237 Sri Lankan Rupees.