Place the number in descending order

2.3 X 10/10; 3.2 X 10/10; 2.3 X 10-8

3.2 X 10/10 = 3.2

2.3 X 10/10 = 2.3
2.3 X 10-8 = 0.000000023
Arranging them in descending order:
3.2, 2.3, 0.000000023