Since 1 Sri Lankan Rupee is equal to 0.0391832153931 Hong Kong Dollars, we could say that n Sri Lankan Rupees are equal to 0.0391832153931 times n Hong Kong Dollars. In other words, we could use the following formula:
Hong Kong Dollars = Sri Lankan Rupees x 0.0391832153931
For example, let's say that we want to convert 2 Sri Lankan Rupees to Hong Kong Dollars. Then, we just replace Sri Lankan Rupees in the abovementioned formula with 2:
Hong Kong Dollars = 2 x 0.0391832153931
That is, 2 Sri Lankan Rupees are equal to 0.0783664307862 Hong Kong Dollars.