Since 1 US Dollar is equal to 6.8199 Chinese Yuan, we could say that n United States Dollars are equal to 6.8199 times n Chinese Yuan. In other words, we could use the following formula:
Chinese Yuan = United States Dollars x 6.8199
For example, let's say that we want to convert 2.0 United States Dollars to Chinese Yuan. Then, we just replace United States Dollars in the abovementioned formula with 2.0:
Chinese Yuan = 2.0 x 6.8199
That is, 2.0 United States Dollars are equal to 13.6398 Chinese Yuan.