noun
included number; number within a total
Refers to a quantity that is part of a larger total, often used in statistics, reports, or breakdowns to indicate how many of a certain category are included in the overall figure.
回答者のうち、女性は内数で120人だった。
Of the respondents, 120 were women (included in the total).
この数字は内数ですので、全体の合計には含まれています。
This figure is an included number, so it is already part of the overall total.