Okay, so here's the plan. In order for this to work, you must have an auto clicker program.
There are three going-to-be-AFK people and one in-game person.
You finish the stage as normally. When I press "retry stage", then everyone should move their cursor to the "yes" button. Activate the auto-clicker.
Wake up next morning and find yourself richer!
I'd be glad to help kekeke.