XSL - Get SUM of price

Question

I have a xml structure like:

 1481 test1 test2 

        

Answer 1

As I understand I need transform price to "normal view (without + and -)" before a send it to function "sum".

That is more or less correct (you don't want to remove the minus sign, in case the number is negative). Given a well-formed input such as:

XML

  
    1481
    test1
    test2
    +798.27
  
  
    0741
    test2
    test2
    +399.14
  

the following stylesheet:

XSLT 1.0

will return:

1197.41