This is a document that outlines how to calculate mortgage payments. The only maths you need is a knowledge of geometric series.
An infinite number of mathematicians walk into a bar. The first orders a pint. The second orders half a pint. The third orders a quarter of a pint...
At this point, the bartender twigs what's going on, pours two pints, puts them on the bar and says: 'Just sort it out amoungst yourselves.'
Interesting stuff about arithmetic and geometric series.
If you would like to get in touch, e-mail me!