The most common and most likely answer to this crossword clue is the 10 letter word MULTIPLIER
I've seen this crossword clue in The Guardian
M
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Buddy explains!

The straight part
We know that "Young producer/calculating type" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case young producer/calculating type = multiplier.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MULTIPLIER mean?
MULTIPLIER noun- A number by which another (the multiplicand) is to be multiplied.
- (grammar) An adjective indicating the number of times something is to be multiplied.
- A ratio used to estimate total economic effect for a variety of economic activities.
- Any of several devices used to enhance a signal
- A multiplier onion.