This little web site shows you how to simplify fractions.

Here's a random fraction:

68

26

52

26

16

26

16

26

2

16

26

2

16÷2

26÷2

2

8

13

or

68

26

52

26

16

26

16

26

2

16

26

2

16

26

2

2 × 2 × 2 × 2

2 × 13

2

2

8

13