Reckon (someone or something) into (something) phrase
To include something/someone as part of a greater sum or calculation.
The waiter forgot to reckon the cost of drinks into the total cost of our meal.
I remember reckoning him into the total number of attendees.
The police have reckon that man into group of suspects.
A full-figured and sexually attractive woman
To cover a very wide range of things or every detail of something.
The verb "reckon" must be conjugated according to its tense.
The origin of this phrase is not clear.
Meaning absolutely certain or without a doubt
I am as sure as God made little green apples that Peter's the one for you, you two make a beautiful couple.