I GUESS IT MUST BE FINALS WEEKEND

Since 2pm yesterday I have spent a total of 15.5 hours in the library and 8.5 hours sleeping. So if you're good at elementary math (which can be surprisingly tricky), you've had figured out that is 24 out of 27.5 hours. Except it was Day Lights Saving time last night so the math just got slightly harder with subtracting an hour from the total time (I've already calculated my sleeping time correctly): 24 out of 26.5 hours.

Three other things must be said along with the above math:

1. I'm thinking I'll be here at the library another 3-4 hours this evening.

2. I think literally everyone I know who lives within a 10 mile radius is also here. Everywhere I go I find tables of teammates, housemates, classmates, etc. And literally every table/cubicle/chair/flat surface is occupied by someone.

3. Probably 87.1% of the hours I've spent in the library have been very productive. So you math geniuses out there - how many of those 15.5 hours have been productive?