Evaluate :

`a^7 times b^7 times c^(-4 ) times c^(5 ) times d^( 9 )`

Evaluate : 7/9 times 4/5 times 3/2

Evaluate : -4/9 times 3/7 times ( -4/5 ) times 3/2

Evaluate : ( a^4 times b^5 times c^7 )/ ( c^8 times a^4 times b^3 )

Evaluate : ( a^4 times b^5 times c^7) / ( c^8 times a^4 times b^3 )

Evaluate : 8/7 times 7/2 times (-3/2 ) times (-9/4 )

Evaluate: 3/7 times 4/9

Evaluate : a^2 times a^4 times b^5 times c^2 times b^2 times c^5

Evaluate : 8/5 times 5/9 times 7/(-3) times 1/4

Evaluate : ( a^(-4 ) times b^(-7 ) times c^(-3) times d^3 ) / ( a^(-7) times b^(-9 ) times c^3 times d^3 )

Evaluate : ( a^(-7 ) times b^(-7 ) times c^5 times d^4 ) / ( a^3 times b^(-5 ) times c^(-3 ) times d^8 )