"You have enough money to buy all the calculators you need," Ricky said, but because he wasn't mean, he pulled out the one he used adding up shirts, lanyards, and CDs, and offered it to her.
"Any random cash is fine. Only of the interest that you get, when you get it. It'll be a bit stressful to keep that secret; I'll have to buy a few kegs of beer, maybe? Five is more than enough."
Never get greedy -- but of extra cash for the sake of fun wouldn't get anybody suspicious. Enough money to have Marlene shipped permanently to Nepal would.