九九归一

jiǔ jiǔ guī yī

释义

1. nine divide by nine is one (abacus rule)
2. when all is said and done

九九归一 的构成词

• 一 yī: one
• 九 jiǔ: nine
• 归 guī: to return
• 九归 jiǔ guī: abacus division rules (using a single-digit divisor)