The team's collective output is greater than the total of each individual's output.
Explanation:
When a group of people come together to perform a task, it's proven to have a more efficient output, since there is a combination of different abilities and points of view of each of the persons in the group. Teamwork promotes better solutions to situations in a faster pace, which is basically one of the objectives of the companies today.
Considering how the author is expressing Bindi's joy of sharing what she has, you can tell the author is glad Bindi is spreading a positive message. Hope this helps!! :)