Since 1 US Dollar is equal to 15.732122 South African Rand, we could say that n United States Dollars are equal to 15.732122 times n South African Rand. In other words, we could use the following formula:
South African Rand = United States Dollars x 15.732122
For example, let's say that we want to convert 2 United States Dollars to South African Rand. Then, we just replace United States Dollars in the abovementioned formula with 2:
South African Rand = 2 x 15.732122
That is, 2 United States Dollars are equal to 31.464244 South African Rand.