Here's why:

* Mitosis is the process of a single cell dividing into two identical daughter cells.

* The division itself is a continuous process, but it's typically broken down into four stages: prophase, metaphase, anaphase, and telophase.

* After these stages are complete, cytokinesis occurs, which physically separates the two daughter cells.

So, while mitosis involves several steps, there is only one division event that results in the creation of two daughter cells.