How to close all tabs in Firefox except one

Many times I find myself with a large number of opened tabs in Firefox browsers and thankfully you don't need to close the program in order to close all the tabs except the one I want to keep.

When I browse I browse heavy that's why I end up with a number of opened tabs.

To close all the tabs except the one you want to keep do the following ...

Right-click the tab you want to keep open and choose Close Other Tabs.

And voila, only one tab I chose remained.