Old Madam Zhang felt that it was not possible to grow good quality fruits and vegetables in what she deemed as Li Gui's lousy courtyard, particularly since she had previously eaten crops grown by Li Gui, and evident by the fact that Li Gui had only managed to earn five dollars even after a few days. It was good timing to return these few children to Li Gui so that their family could save on feeding them. Besides, even if they did not take care of these children anymore, the children would still have to support her when she was old. No matter what, she would always be the children's biological grandmother, it was a fact that she could bring up in any situation!
The sum she quoted was based on 100 dollars each child for four children, and 200 dollars for the adult. In the past ten years, no matter what they had eaten, they would have incurred more than this amount. Qiao Mei thought that the sum was fair and there was no loss to them based on the calculations.