Logarithms is the traditional way of adding large numbers

Prior to the 1970s when calculators were not invented multiplying large numbers were very difficult and almost always incorrect, logarithms were used

Making floating point math highly efficient for AI hardware - Engineering at Meta

Adding Large Numbers Worksheets

How to Write in Logarithmic Form –

Multiplication algorithm - Wikipedia

Logarithm Rules List of all the Log Rules with Examples

Logarithms — What, Why and How. Understanding the intuition behind…, by Gaurav Goel

Logarithms, logs, log, ln, lg

How to use the LOG formula in Google Sheets - Sheetgo Blog

Brains are bad at big numbers, making it impossible to grasp what a million COVID-19 deaths really means

Question Video: Computing Numerical Logarithmic Expressions Using Laws of Logarithms

Adding & Subtracting Logs, Rules & Examples - Lesson

Logarithmic scale - Wikipedia

Long Multiplication Method KS2: How To Teach It Step-By-Step

3 Ways to Add Large Numbers - wikiHow