in reply to Perl and maths
(5/3 + 7/13)/(5/2-3/7) and let them perl produce line bye line (39 + 3/13)/(35-9/21)
But didn't you mean:(65/39 + 21/39) / (35/14 - 6/14) ??I agree that the original looks a little screwy though.
Paulster2