1.2 / 2, we multiply both sides by 10 and we get 12/20, divide both sides by 2 and you get 6/10, again we divide by 2 and we get: 3/5, which is your final answer.
There are two methods I would use for this question
The first involves separating both values and dividing them individially
1.2 / 2
1 / 2 = 0.5
.2 / 2 = 0.1
0.5 + 0.1 = 0.6
1.2 / 2 = 0.6
Or
Because you are using decimals you can take away the decimal point and add it later
1.2 / 2
12 / 2
12 / 2 = 6
now we add the decimal point
0.6
Either way works
Hope I helped