Rus frowns at that. "I didn't know," he says softly.
"Any one of them." Rus seems to think he's scored a point. "He upset a lot of people."
"Shame about his nifflers," Rus almost chortles, not sounding the least bit sorry. He stares at Severus. "I was good at Arithmancy. She apparently had the idea that I'd need help going past ten." He wriggles his fingers. "Or twenty if I took off my shoes."
"No good with chocolate," Rus grins.
"And don't forget it," he glares at Sev.
Rus jots the numbers on a napkin which he stuff in his pocket. He studies the picture. "Got it. Thanks. Can I pick up anything else for you whilst I'm there?"