HUH?

This afternoon my wife and kiddo came and took me to lunch. They decided to take me to a Chinese Buffet, the only way to go for Chinese food in my book.

Well we ate and our waitress brought us our bill with three fortune cookies, one for the kiddo and one for each of us.

I opened it up and do not understand. I will list both sides for you since one side has the saying and the opposite side has your “lucky” numbers in case you are a betting person.

Fortune: “Your lucky number for the week is seven.”
Lucky Numbers on opposite side: 11 13 21 32 40 46

Do you see what I see? Help me to understand this, please.