after the decimal point; below the decimal
Refers to digits after the decimal point in a number; often used in mathematical or financial contexts.
Please round down the digits after the decimal point in the calculation result.
expression, noun which may take the genitive case particle 'no'
of no account; beneath notice
Idiomatic figurative use: something so trivial it is not worth considering, like digits after the decimal point.
His opinion was treated as beneath notice.