The business-like way to deal with things? (6)

I believe the answer is:

firmly

I'm a little stuck... Click here to teach me more about this clue!

'way to deal with things?' is the definition.
I can't tell whether this definition defines the answer.

'the business-like' is the wordplay.
'the business' becomes 'firm' (firm is a kind of business).
'like' becomes 'ly' (similar in meaning).
'firm'+'ly'='FIRMLY'

Can you help me to learn more?

(Other definitions for firmly that I've seen before include "Strongly" , "With resolute determination" , "fast" , "Resolutely" .)

I've seen this clue in the Evening Standard.

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