Step-by-step explanation:
So fractions are essentially divisions that are left in their operation form.
So if you were to do 4/2, it would give you 2, but the fraction form is 4/2.
Same thing for 2/9, if you solve the division it would be 0.222...repeating, but lets put 0.2. For many, leaving the answer in fraction form is cleaner.
Hope that answers your question