Step #1: Switch off the “Show remainder?” tool.

In my canvas, I added the first template from the “Long Division” template. This is what the first page looks like:

To hide the remainder, switch off the “Show remainder?” tool.

This is what it looks like when switched off:

Afterward, click on the “Update Worksheet” button.

This is what the worksheet looks like after:

As seen in the worksheet above, the remainder is gone.