There's a long silence, and when Andrew speaks his voice is small and choked again, with the awareness of what a terrible answer it is.

"I don't know."

His face twists, and he tries again. "I, I mean I don't know exactly? I was ... I was about twenty-eight or twenty-nine when, when I first ... when I changed worlds, and I was there for maybe five or six years? And then it's been ... I think it's been a few years since then, I don't ... I don't know for sure how many."

A beat. "So I guess somewhere between thirty-five and ... and forty? I, I'm almost sure."