This is written 12 ÷ 50 or 12/50.
In most cases you would simplify this operation by reducing the numbers to 6 ÷ 25 (or 6/25). In this example it is simpler to increase the numbers by a factor of 2 so they become 24 ÷ 100 (24/100).
This can be seen to be 0.24 as a decimal but if a fraction were required normally you would submit the simplest equivalent which is 6/25.
50
50
50
50
12.5
100
600 divided by 12 is 50.
12 divided by 3 to the second power with work = 4
50
12.5
50.1667
2.6316