Use MAP and LAMBDA to build centralized, error-proof, and auto-spilling Excel spreadsheet systems.

Microsoft Excel allows you to quickly add percentages to a series of numbers without performing each calculation by hand. As an example, you might have a list of wholesale prices for items you sell in ...

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...

LAMBDA defines the custom logic, and SCAN moves that logic through your data range.

Calculating sales tax on prices is something you don't have to worry about if you use Excel. You can add a formula to the spreadsheet you use for invoices, bills of sale or quotes, and that's the end ...