How do you divide a fraction

$$$$You turn the second one upside down and change the divide to a multiply.

Dragon - why don't you do a proper example?     NOTE It is division that is asked for!

Example: 

$$\frac{3}{9}*\frac{4}{5}$$ 

Switch on of the fractions.

$$\frac{4}{5}\Rightarrow\frac{5}{4}$$

Now multiply,

$$\frac{3}{9}*\frac{5}{4}=\frac{5}{12}$$

So $${\frac{{\mathtt{5}}}{{\mathtt{12}}}}$$ Is the final answer.

Well, that is how my teachers taught me. They told me how to do it, and the way of how I did it is how they taught me.