INTRO:  This application in financial calculations, of many types, 
does not avoid looking up and using established or published tables.  
See DISCLAIMER and WARNING.

EXAMPLE: If you want to know the annual return on a present worth of
$200,000 and if you invest anything over $20,000, for ten years at an
assumed annual interest of 8%, what is the remaining sum?

 First calculate AP for the Annual return on the Present Worth
($200,000) for an assumed 8% annual interest over 10 years. That gives
you $24,000 annual return, but nothing left after 10 years (that's the
annuity calculation). You get .149 or a $29,800 annual return.

 Second calculate the FA for Future Worth on the Annual Savings of
$9,800 (the amount over $20,000). I got 14.48 or $141,904 is left in
savings.
 The answer requires looking up two factors on the Interest Table
Page ( plus a pocket calculator ).

USE: The program outputs all the factor types ( which you can read
from the table ). Enter the interest in decimal notation or whole numbers 
percent. The number of years involved are given in the table.

DISCLAIMER-WARNING:
 The application on the Web gives a table of interest calculations.
The author, web site , et.al. is not responsible for any use of the table.
The values are a good match to published tables but some factors do
not match at all places. The calculations give a number of 
results not in published tables - many were at the extreams of 
the table (in the least significant digits of the largest numbers). 

EXAMPLE :
  Another example in financial calculations, of many types, not to
avoid looking up tables, of course. If you want to know the annual
return on a present worth of $100,000 and if you invest anything over
$10,000, for ten years at an assumed annual interest of 8%, what is
the remaining sum?

 First calculate AP for the Annual return on the Present Worth
($100,000) for an assumed 8% annual interest over 10 years. That gives
you $14,000 annual return, but nothing left after 10 years (that's the
annuity calculation). You get .14 or a $14,000 annual return.

 Second calculate the FA for Future Worth on the Annual Savings of
$4,000 (the amount over $10,000). I got 14.48 or $57,920 is left in
savings. Or, you saved $4,000 for 10 years ($40,000) and received
$17,920 in interest.