Since 1 US Dollar is equal to 18.8425 Namibian Dollars, we could say that n United States Dollars are equal to 18.8425 times n Namibian Dollars. In other words, we could use the following formula:
Namibian Dollars = United States Dollars x 18.8425
For example, let's say that we want to convert 2.0 United States Dollars to Namibian Dollars. Then, we just replace United States Dollars in the abovementioned formula with 2.0:
Namibian Dollars = 2.0 x 18.8425
That is, 2.0 United States Dollars are equal to 37.685 Namibian Dollars.