\[= \frac{2\sqrt{3}}{4 - 3} \cdot \left( 5\sqrt{3} - 2\sqrt{3} \right) =\]
\[= \frac{2\sqrt{3}}{1} \cdot 3\sqrt{3} = 2\sqrt{3} \cdot 3\sqrt{3} =\]
\[= 6 \cdot 3 = 18\]