Since 1 Mexican Peso is equal to 0.390135897889 Hong Kong Dollars, we could say that n Mexican Pesos are equal to 0.390135897889 times n Hong Kong Dollars. In other words, we could use the following formula:
Hong Kong Dollars = Mexican Pesos x 0.390135897889
For example, let's say that we want to convert 2 Mexican Pesos to Hong Kong Dollars. Then, we just replace Mexican Pesos in the abovementioned formula with 2:
Hong Kong Dollars = 2 x 0.390135897889
That is, 2 Mexican Pesos are equal to 0.780271795778 Hong Kong Dollars.