Here's how it works:

1. Interphase: The cell grows and copies its DNA.

2. Prophase: The chromosomes condense and become visible.

3. Metaphase: The chromosomes line up in the middle of the cell.

4. Anaphase: The chromosomes are pulled apart to opposite poles of the cell.

5. Telophase: The cell membrane pinches in and divides the cell into two daughter cells.

Each of these daughter cells then enters interphase again and can repeat the process of mitosis, ultimately leading to 4 cells.

Key points:

* Mitosis is a type of cell division that produces two identical daughter cells from a single parent cell.

* It's essential for growth, development, and repair of multicellular organisms.

* This process is responsible for the increase in the number of cells in an organism.