G'morning Bo, 

 BS>> Righty.. And then a good old calculator could solve it. :)
 MM> Goodo - so what are the first two payments ?
 BS> The good calculator is gone. I did have a Texas Instrument
 BS> TI-83, the best calculator ever, but borrowed it to a
 BS> friend, and haven't seen it since.

I lose many books that way - but never a calculator !  They seem 
to wear out or drop dead;  the best I ever had was a Casio Pro-101 
with 256 programmable steps...

That brings back memories;  I had developed a very cute routine 
for working out the total coverage of any group of media used 
together in an advertising campaign - that worked very well in 
Fortran on an IBM 1800 owned by a bureau.   The Casio came with a 
lecturing job at Auckland Technical Institute,  and I became 
obsessed with fitting the essense of the routine into 256 steps.

Eventually, it came down to needing 258 steps to complete 
properly, so I had it run into an error condition that left the 
essential answer sitting on its display - even the machine had to 
be reset to do another calculation.

However,  that was enough to demonstrate the process.  I won a 
commission to programme the routine into some HP programmables and 
sold copies to newspapers in Australia and New Zealand...

Heady days...

:-))
 
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