算盤 そろばん勘定 かんじょうではありませんでした
sorobankanjōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 算盤勘定

1. Was not an abacus calculation.; Was not reckoning with an abacus.

Past/Perfective
Negative
Polite
Formal Register