Solve {l}{text{6}(5/2a^{2}b+3a)*(8/5ab-1)}{(5/2a^{2}t+1/3a^{2}t^{2})*(frac{3}{4}a^3t^2-frac{3}{2}at-frac{1}{3}a^3t^2)}{(frac{1}{2}x+frac{3}{2}y-frac{3}{4})*(frac{4}{3}x-frac{1}{2}y+frac{2}{3})}

$$\left. \begin{array} { l } { \text { 6 } ( \frac { 5 } { 2 } a ^ { 2 } b + 3 a ) \cdot ( \frac { 8 } { 5 } a b - 1 ) } \\ { ( \frac { 5 } { 2 } a ^ { 2 } t + \frac { 1 } { 3 } a ^ { 2 } t ^ { 2 } ) \cdot ( \frac { 3 } { 4 } a ^ { 3 } t ^ { 2 } - \frac { 3 } { 2 } a t - \frac { 1 } { 3 } a ^ { 3 } t ^ { 2 } ) } \\ { ( \frac { 1 } { 2 } x + \frac { 3 } { 2 } y - \frac { 3 } { 4 } ) \cdot ( \frac { 4 } { 3 } x - \frac { 1 } { 2 } y + \frac { 2 } { 3 } ) } \end{array} \right.$$

Evaluate

$$\frac{3a\left(8ab-5\right)\left(5ab+6\right)}{5},\ \frac{\left(2t+15\right)t^{2}a^{3}\left(5ta^{2}-18\right)}{72},\ \frac{\left(2x+6y-3\right)\left(8x-3y+4\right)}{24}$$