How did the day go?
This page puts the number you predicted next to the number you got, suggests what might explain the gap, and splits the real money three ways.
The whole day travels in the link, so this page works on any phone, tablet or laptop the link is opened on, and it can be sent to whoever lent the first forty dollars. Nothing is sent to us and there is no account. A link with no counted day in it starts empty, and you can type the number straight in.