Calculator figure (6)
I believe the answer is:
addend
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">calculator figure</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for addend that I've seen before include "something to put on" , "increasing quantity" , "An increasing number" , "A number put on" .)