Is there a way to use the return value of the function in the replace text of the s/// operator?

In other words is there a way to effectively do this: 

s/__AMOUNT__/format_number($amount)/g;
instead of this (which requires an extra line and variable): 
$formatted_amount = format_number($amount);
s/__AMOUNT__/$formatted_amount/g;

In reply to can substitution operator replace text with value returned from function? by redss

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