On average, how much sleep do you get each night?

How much sleep do you usually get each night? Or, if it's too hard to give a nightly estimate, how much do you sleep each week?

Sleep has become very erratic for me in the second semester of college. There are times when I go for more than two days without sleeping. I'd say that I probably average about 3-5 hours each night. How about you?

Lately i've been getting like 6 hours max because my work hours and school. But it will be worth it in the long run though:)