This is the 9479th most frequent Japanese word.
算盤
Abacus.
Here, '算盤' symbolically represents mental computation or the process of reasoning.
彼女は頭の中の算盤を働かせて問題を解きました。
She used her mental abacus to solve the problem.
The word '算盤' here refers to the physical abacus tool used for performing arithmetic calculations.
彼は算盤を使って計算をした。
He used an abacus for calculation.
In this context, '算盤' metaphorically refers to financial calculations or business assessments.