Translation of gedeihen

In the beginning it looked brutal but it worked. He brought my wallet back to me and asked me to count the bills in it. I was stunned and could not believe what just happened. He repeated his order.
The advantage of this change is that: 1. it improves the response time after every asked word by double. 2. Some do not want to save their lessons, they just want to test it without results being collected...
Luckily for him, his wife stood by him and explained that he was clumsy and that would happen to him all the time. Anyway, it none of our business. We all had dinner afterwards and went to sleep.