to this:

Manager: The developers gave me an estimate of 160 people-days. I rounded it for the employer. Up to 320.
_____ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Young and green! On pi, on pi must be multiplied. If you are a great optimist, then on e.

The joke:
If the proof falls from the fact that the junior is stupid, it means that the stupid is not a junior.