Perform the Indicated Operation and Simplify $\frac { 5 } { 6 } \times \frac { 5 } { 6 } \times \frac { 40 } { 8 } \div 25$

Perform the indicated operation and simplify. $\frac { 5 } { 6 } \times \frac { 5 } { 6 } \times \frac { 40 } { 8 } \div 25$