Number Crunching
Noun · Slang & Abbreviations
Definitions
Working through large amounts of calculation, data, or quantitative analysis. In engineering slang, it often refers to the less glamorous but necessary analytical side of technical work.
In plain English: Doing lots of calculation or quantitative analysis.
Example: "Most of the migration estimate turned out to be number crunching around storage growth, query cost, and the real retry volume under peak load."