Since 1 Sri Lankan Rupee is equal to 0.0030929158978979343 United States Dollars, we could say that n Sri Lankan Rupees are equal to 0.0030929158978979343 times n United States Dollars. In other words, we could use the following formula:
United States Dollars = Sri Lankan Rupees x 0.0030929158978979343
For example, let's say that we want to convert 2.0 Sri Lankan Rupees to United States Dollars. Then, we just replace Sri Lankan Rupees in the abovementioned formula with 2.0:
United States Dollars = 2.0 x 0.0030929158978979343
That is, 2.0 Sri Lankan Rupees are equal to 0.006185831795795869 United States Dollars.