what programming language to learn to make renderning script

Dear All,

I want to make script or program help me to import XML balance sheet with specific ordering and calculation


and rendering it , on the new ordering and calculation I assign in the code then export it


all based on XML codes

so would you tell me what language to learn to make that?? using script or program? and guess will need SQL so please want to tell what to learn exactly


for example"

Co. A calculate

Profit = revenues - Expenses

and revenues ( goods sold - cost of goods sold depending on X method)
expenes ( e.g. selling and administrative expenses)

co. B calculate
Profit = revenues - Expenses

and revenues ( goods sold - cost of goods sold depending on Y method)
expenes ( e.g. selling expenses ONLY)


so I want to import that READY XML file equation and rendering it so I made Co. A profit be calculated like Co. B profit means
convert X method to Y method
and Deduct the Administrative Expenses
and export it with the same original file extension XML

so What to learn to help me to do that??