Calculates (7)
I believe the answer is:
reckons
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">calculates</span>' is the definition.<br/ ><span class="explanation-format__explanation">('reckon' can be a synonym of 'calculate')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for reckons that I've seen before include "Suspects" , "Considers" , "Judges" , "Conkers (anag.)" , "Calculates" .)