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Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.

Greg DePersio has 13+ years of professional experience in sales and SEO and 3+ years as a writer and editor. Simple interest is calculated only on the principal balance of the loan each period.

Discover how macroeconomics impacts GDP, inflation, and unemployment, and learn how policy decisions shape economic stability ...

I've been writing about software and hardware for PCMag for more than 40 years, focusing on operating systems, office suites, and communication and utility apps. I've specialized in everything related ...