I'm not sure how you would call this, but I have two input
text feilds; one with a maximum of 10 letters in it, and one with
as many numbers as possable. In the first box I want to take the
last number, add it to the second number, divide it by the third,
subtract that from the 8th and so on. The result number equals the
number in the second box. The first box is defined by the user. How
could I do this?