You convert a common fraction to a decimal by division. For example for 8/14 divide 8 by 14 to get 0.5714...
I have a garden with 14 rows of carrots.
I plan to dig one row tonight so that will give me one fourteenth of the carrots. I will then take the carrots I have dug and divide by 3 in order to share them with my son and the food bank. What fraction of the entire crop of carrots am I going to give to the food bank? In other words what is 1/14 divided by 3?
Divide the entire garden by 3 to get 14 3 = 42 pieces (each one third of a row in length).
The food bank gets one of these pieces, that is 1/42 of the carrot crop. Thus
1/14 divided by 3 is
one third of 1/14, which is
1/3 1/14 = 1/(3 14) = 1/42
To convert to a fraction divide 1 by 42 so 1/42 = 0.0238...
I hope this helps.