Hi,

I have been using org mode for a few days and I am impressed.

I have followed a few tutorials and videos, however I want to solve a
problem and I did not find how can I do it.

I have 2 tables , and every such table has a variable $sum, that is the sum
of a column. Because I am lisp engineer, I used the formula '(+ @I..@II);N
to compute it, I prefer lisp to calc.

My problems are

1: to export the value of the $sum from one table, and make global
computations using it
2: to compute the value of some property in function of such variables,
defined inside tables.

Afterwards, can I compute the value of a property in function of the value
of other properties ?

Probably my question is stupid, I do not know, because I did not understand
yet the principles of properties of org mode.