500×(3/5)÷6=50

4×6= 24 black rabbits and 4×5= 20 white rabbits.

45×(5/9)×4= 100

(98-80)÷(3/50)=300

40÷( 1/3- 1/4)=480

660×(2/3)×( 1/4)= 1 10

396÷(5+6)= pig 36 36÷3= sheep 12.

(4000- 1600)×(3/25)=288