tractably造句

Here Dalmatians are parked in front of the camera and seen tractably obeying their trainers'orders.
Is there any chance of being able to solve this tractably ( possibly by convex optimisation )?
He later described the moment that he cracked the problem of tractably describing such a system mathematically as " the most exciting moment of my life ."
It's difficult to see tractably in a sentence. 用tractably造句挺难的