Math is Scary

A: Angela says we’re going to lose valuable one-on-one time because we won’t be commuting to work together as often. 
K: Amy, do you really think having a second car is going to hurt our relationship?
A: No, I mean, it was only ten minutes, twice a day, anyway. 
K: Huh.  Let’s see . . . twenty minutes a day, five times a week, is 100 minutes.  That’s more than an hour and a half a week.  And, um, let’s see . . . [squinting his eyes and thinking silently] . . . that’s more than 86 hours, which is more than 3 ½ days every year that we won’t be talking to each other. 
A: Okay, now I’m worried.