R-generated table with some rows that are expandable to display more information. Let’s see how to make a table like this. If you’d like to follow along, install and load the reactable package.

Type the numbers you want to total into their individual table column cells. Right-click your mouse in the last row of the column of data you will be adding. Click the "Insert" option.

But creating complex HTML tables with cells that span multiple columns and rows can lead to elaborate nested hierarchies of Velocity directives, which quickly render the Velocity template ...

How to Put Text in Columns With HTML. Your company's website may be your first opportunity to impress a client or prospective customer.

If you want to sum columns of data automatically so that the totals show only the sum of visible cells (for example), Excel’s Tables features can do it.