"Before you ask, that means to buy her a house, furnish it, buy every item the baby needs, provide nourishment, and give Weaselette a stipend. By the time Baby Weasel pops out, Weaselette is ensconced in the house, one Potter has to pay for the entire time it takes to get her out. Actually, he keeps paying everything until he can get a judgment ending it. This can take years. And then, once he's paid for close to a decade of their lives, when it is over the Weaselette doesn't have to pay back a dime," Draco explained.