$\frac{ 6{a}^{3}{b}^{4} }{ 5 } \times \frac{ 3 }{ 2{a}^{2}{b}^{3} }$
Cancel out the greatest common factor $2$$\frac{ 3{a}^{3}{b}^{4} }{ 5 } \times \frac{ 3 }{ {a}^{2}{b}^{3} }$
Cancel out the common factor ${a}^{2}$$\frac{ 3a{b}^{4} }{ 5 } \times \frac{ 3 }{ {b}^{3} }$
Cancel out the common factor ${b}^{3}$$\frac{ 3ab }{ 5 } \times 3$
Calculate the product$\frac{ 9ab }{ 5 }$