You will be given a definition of a task first, then some input of the task.
In this task, you will be presented with a question and you have to answer the question based on your knowledge. Your answers should be as short as possible.

What was the sales in millions of the best-selling single released by the artist who initially gained recognition as an actor on the teen drama television series Degrassi : The Next Generation in the 2000s ?
Output:
15.3