A loong time ago when I first encountered spreadsheets, I thought it would be a neat way of making the monthly reports, just adding up columns and rows of a 30x

A loong time ago when I first encountered spreadsheets, I thought it would be a neat way of making the monthly reports, just adding up columns and rows of a 30x30 table. My boss was not happy about the use of "sum" and made me add up the rows and columns on a desk calculator to check that they were right.