In regards to a loan, this means "principal and interest."
Related information about pi:
- Pi Day » 1 Million Digits of Pi
 Just the Beginning. These are only one million digits of Pi. Pi is an irrational   number, meaning it will continue infinitely without repeating.
 
- Pi - Wikipedia, the free encyclopedia
 The number π is a mathematical constant that is the ratio of a circle's   circumference to its diameter. The constant, sometimes written pi, is   approximately equal to ...
 
- Pi (1998) - IMDb
 Directed by Darren Aronofsky. With Sean Gullette, Mark Margolis, Ben Shenkman  , Pamela Hart. A paranoid mathematician searches for a key number that will ...
 
- The Pi-Search Page
 Find strings of digits in the first 50000000 digits of Pi.
 
- Pi The Movie: Enter
 Pi. The motion picture from Artisan Entertainment.
 
- PI
 Pi is a name given to the ratio of the circumference of a circle to the diameter.   That means, for any circle, you can divide the circumference (the distance around ...
 
- YTMND - 3.141592653589793...
 pi to a whole buncha digits http://keithschofield.com/pi/std.html.
 
- Pi -- from Wolfram MathWorld
 Pi's continued fraction is given by [3, 7, 15, 1, 292, 1, 1, 1, . ... pi is known to be   irrational (Lambert 1761; Legendre 1794; Hermite 1873; Nagell 1951; Niven   1956 ...