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`2/9 : 4/8`

`= 2/9 . 8/4`

`= 1/9 . 8/2`

`= 1/9 . 4`

`= 4/9`

`4/9 : 2/8`

`= 4/9 . 8/2`

`= 2/9 . 8/1`

`= (16)/9`

`2/8 : 8/9`

`= 2/8 . 9/8`

`= 1/8 . 9/4`

`= 9/(32)`

`1/4 : 2/8`

`= 1/4 . 8/2`

`= 8/8 = 1`

`2 : 3/4`

`= 2 . 4/3`

`= 8/3`

`1/4 : 4`

`= 1/4 . 1/4`

`= 1/(16)`

`9 : 2/3`

`= 9 . 3/2`

`= (27)/2`

`5/3 : 3 `

`= 5/3 . 1/3`

`= 5/9`