16 / 4 is 4. Check this via multiplication! 4 x 4 gives back 16.
If you know the multiplication table, you should know how to work out this problem.
There are many; so I will give 3 examples: 6/8, 9/12, 12/16.
It is 5/4
6/8
3/4=0.75
1/18
35/4 :P
2 over4, 1 over2
It is 225/100 as an improper fraction.
1 and 1 over3
24/4 = 6/1 = 6
13 over 4 as a mixed number = 31/4
If: x/4 = 3.6 then x = 4 times 3.6 => 14.4