Multiplying Fractions · Superchallenge problem

A photo is $8$ cm long and $4$ cm wide. First both sides are multiplied by $1\dfrac{1}{2}$. Then both new sides are multiplied by $\dfrac{2}{3}$. Finally both sides are multiplied by $1\dfrac{3}{4}$. What is the area of the final photo, in square centimeters?