Short Answer: 4/3
Remark
Before doing the multiplication, you should do a cancellation. You can cancel fractions by dividing any numerator by the same thing that will go into any denominator or vica versa.
3 goes into 9 = 3
4 goes into 16 four times.
So the fraction cancellation looks like this.
[tex] \frac{ \frac{16}{4} }{ \frac{9}{3} } = \frac{ \frac{4}{1} }{ \frac{3}{1} } = \frac{4}{3} [/tex]
