This may help:
There are [tex] \frac{1}{3} [/tex] gallons of lemonade.
Two friends share the lemonade.
What fraction of the lemonade does each friend receive?
To solve you do kcf or keep change flip.
You keep [tex] \frac{1}{3} [/tex] and change division to multiplication.
Then [tex] \frac{2}{1} [/tex] is changed to [tex] \frac{1}{2} [/tex]
The answer would be [tex] \frac{1}{6} [/tex]
Hope That Helps!