numerator
https://gyazo.com/de69469cc2b40b5c9a3e36b8da9a9808
source: Definition of Numerator
noun Mathematics
the number above the line in a common fraction showing how many of the parts indicated by the denominator are taken, for example, 2 in 2/3.
〘数〙 (分数の)分子(↔ denominator)