I have a fee calculator I would like to add to my site.
Its pretty basic, but there are lots of options. Its a school fee calculator.
So you have 11 grades with different prices, and then the combination of the number of children at the school changes.
So you could have 2 children one in grade 1 and one in grade 7 and your fee would be determined based on this.
As you can see there are (4 x 3 x 2 x 1) x (11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1) options...lots and lots...
Can you help me write a fairly simply calculation but lots of options?