I haven't slept more than three hours a night, for the last four nights. Every boy in my house has found a way to keep me awake from peeing to crying to puking to eating, every one of the last 4 nights.
In four days, there have been 120 hours. That's 12 hours of sleep and 108 hours of awake, give or take. If I've done my math correctly, that's a 14.4% sleep rate.