i Register
In some senses, calcule is marked as obsolete. Watch for register when choosing this word.
noun
A reckoning; computation.
the generall calcule which was made in the last perambulation exceeded eight millions
verb
To calculate, reckon.
So whā this Calcas knewe by calculing ¶ And eke by the anſwere of this god Apollo ¶ That grekes ſhulde ſuch a people bryng ¶ Thorowe which that Troye muſt be tordo ¶ He caſt anon out of the towne to go