Figures turned up at short notice: not a lot (4)
I believe the answer is:
data
'figures' is the definition.
(I've seen this before)
'turned up at short notice not a lot' is the wordplay.
I cannot really understand how this works, but
'at' is within the answer.
'a' is present in the answer.
'lot' could be 'd' and 'd' is located in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for data that I've seen before include "Listed facts" , "Results of research" , "information from bank" , "Facts and figures as fed to computers (4)" , "Factual information" .)