שָׁעַר shâʻar (H8176)

to act as gatekeeper; (figuratively) to estimate

1) to split open, reason out, calculate, reckon, estimate 1a) (Qal) to calculate Pr 23:7

a primitive root; to split or open, i.e. (literally, but only as denominative from שַׁעַר (H8179)); compare see שׁוֹעֵר (H7778)