He 'profited by' his experience/mistake. [=he learned something useful from his experience/mistake]
The book can be read with 'profit' by anyone who wants to understand how the system works.
We sold the house 'at a profit'. [=we made a profit when we sold our house]
(..) Goodbye. He boys. I knew that I would find you here. Do you have your straws with you? Then we throw 't in pots do a label around it. That is pure profit. What is this for a place? One in the brain as big as a pin. - 'T His also speldenknopjes. Hey check out the new bedwelmer. - So, cool. (..)2007 Bee Movie