Paper quantity (4)
I believe the answer is:
ream
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">paper quantity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ream that I've seen before include "500 sheets, perhaps" , "20 quires of paper" , "Twenty quires of paper" , "Make hole larger - lot of paper" , "papers" .)