As chambermaid might for computer program (11)
I believe the answer is:
spreadsheet
'computer program' is the definition.
(I know that spreadsheet is a computer program)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for spreadsheet that I've seen before include "Financial system" , "Table-creating software" , "Computer program allowing easy calculations for financial planning" , "Data manipulation program" , "Computer program useful for accounting" .)