* Each division doubles the number of cells.

* Start with 1 cell.

* After 1 division: 1 x 2 = 2 cells

* After 2 divisions: 2 x 2 = 4 cells

* After 3 divisions: 4 x 2 = 8 cells

* After 4 divisions: 8 x 2 = 16 cells

* After 5 divisions: 16 x 2 = 32 cells

* After 6 divisions: 32 x 2 = 64 cells

So, if one cell divides six times, you'll end up with 64 cells.