reckon (someone or something) into (something)
To include or figure some number or people or things into a greater sum or calculation. Be sure you reckon Janet's husband and kids into your numbers for the people coming to the reception. We haven't reckoned these sales into the total figures for this quarter.
reckon someone or something into something
and reckon someone or something into figure someone or something in; to include someone or something in one's calculations. I will reckon Jane into the total number of guests. I reckoned in a few too many people.