Something to do with money at last (4)
I believe the answer is:
lend
'something to do' is the definition.
I can't judge whether this definition defines the answer.
'money at last' is the wordplay.
'money' becomes 'l' (L can mean 'pounds').
'at' means one lot of letters go next to another.
'last' becomes 'end' (I've seen this in another clue).
'l'+'end'='LEND'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for lend that I've seen before include "Give temporarily" , "Impart" , "contribute" , "Let someone borrow" , "Supply (money) at interest" .)