An open cluster is a cluster of stars that consists of dozens to thousands of stars.

Observing star clusters is a very important task for astronomers.

He read scores of books.

Astronomers have discovered a new globular cluster.

He solved a large number of problems.

Understanding numbers is important for solving math problems.

He was bedridden with illness for several days.

I can't solve this problem because there are too many numbers.

Natural numbers start from 0 and continue as 1, 2, 3, 4, 5, 6, 7, 8, 9.

What should I do to find the root number of this equation?